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121032215000 = 235431780853
BaseRepresentation
bin111000010111000010…
…1010000100111011000
3102120101221110120021122
41300232011100213120
53440333221340000
6131333524224412
711513201565404
oct1605605204730
9376357416248
10121032215000
1147369591574
121b55953b108
13b54acc3788
145c0247c104
1532358ec085
hex1c2e1509d8

121032215000 has 80 divisors (see below), whose sum is σ = 292726547520. Its totient is φ = 46851120000.

The previous prime is 121032214993. The next prime is 121032215033. The reversal of 121032215000 is 512230121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 121032215000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 235427 + ... + 545426.

It is an arithmetic number, because the mean of its divisors is an integer number (3659081844).

Almost surely, 2121032215000 is an apocalyptic number.

121032215000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121032215000 is an abundant number, since it is smaller than the sum of its proper divisors (171694332520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121032215000 is an equidigital number, since it uses as much as digits as its factorization.

121032215000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780910 (or 780891 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

Adding to 121032215000 its reverse (512230121), we get a palindrome (121544445121).

The spelling of 121032215000 in words is "one hundred twenty-one billion, thirty-two million, two hundred fifteen thousand".

Divisors: 1 2 4 5 8 10 20 25 31 40 50 62 100 124 125 155 200 248 250 310 500 620 625 775 1000 1240 1250 1550 2500 3100 3875 5000 6200 7750 15500 19375 31000 38750 77500 155000 780853 1561706 3123412 3904265 6246824 7808530 15617060 19521325 24206443 31234120 39042650 48412886 78085300 96825772 97606625 121032215 156170600 193651544 195213250 242064430 390426500 484128860 488033125 605161075 780853000 968257720 976066250 1210322150 1952132500 2420644300 3025805375 3904265000 4841288600 6051610750 12103221500 15129026875 24206443000 30258053750 60516107500 121032215000