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121210200013 = 781119213461
BaseRepresentation
bin111000011100010110…
…0001101111111001101
3102120212100101010211011
41300320230031333031
53441214302400023
6131403323125221
711520462462220
oct1607054157715
9376770333734
10121210200013
114744aaa8321
121b5a9073811
13b578b40456
145c1bd6d5b7
15324635850d
hex1c38b0dfcd

121210200013 has 8 divisors (see below), whose sum is σ = 138528299520. Its totient is φ = 103892689680.

The previous prime is 121210199993. The next prime is 121210200019. The reversal of 121210200013 is 310002012121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121210200013 - 213 = 121210191821 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121210199966 and 121210200002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121210200019) 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, 461103 + ... + 674563.

It is an arithmetic number, because the mean of its divisors is an integer number (17316037440).

Almost surely, 2121210200013 is an apocalyptic number.

It is an amenable number.

121210200013 is a deficient number, since it is larger than the sum of its proper divisors (17318099507).

121210200013 is an equidigital number, since it uses as much as digits as its factorization.

121210200013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294587.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 121210200013 its reverse (310002012121), we get a palindrome (431212212134).

The spelling of 121210200013 in words is "one hundred twenty-one billion, two hundred ten million, two hundred thousand, thirteen".

Divisors: 1 7 81119 213461 567833 1494227 17315742859 121210200013