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121032202220 = 22537915967309
BaseRepresentation
bin111000010111000010…
…1001101011111101100
3102120101221102220202022
41300232011031133230
53440333220432340
6131333524045312
711513201513216
oct1605605153754
9376357386668
10121032202220
1147369582a06
121b559533838
13b54acbaa07
145c024775b6
1532358e83b5
hex1c2e14d7ec

121032202220 has 24 divisors (see below), whose sum is σ = 254838267600. Its totient is φ = 48285139392.

The previous prime is 121032202201. The next prime is 121032202223. The reversal of 121032202220 is 22202230121.

It is not an unprimeable number, because it can be changed into a prime (121032202223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7976075 + ... + 7991234.

It is an arithmetic number, because the mean of its divisors is an integer number (10618261150).

Almost surely, 2121032202220 is an apocalyptic number.

121032202220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121032202220 is an abundant number, since it is smaller than the sum of its proper divisors (133806065380).

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

121032202220 is a wasteful number, since it uses less digits than its factorization.

121032202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15967697 (or 15967695 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 121032202220 its reverse (22202230121), we get a palindrome (143234432341).

The spelling of 121032202220 in words is "one hundred twenty-one billion, thirty-two million, two hundred two thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 379 758 1516 1895 3790 7580 15967309 31934618 63869236 79836545 159673090 319346180 6051610111 12103220222 24206440444 30258050555 60516101110 121032202220