121012103100 has 72 divisors (see below), whose sum is σ = 400146694528. Its totient is φ = 27659908800.

The previous prime is 121012103081. The next prime is 121012103143. The reversal of 121012103100 is 1301210121.

It is a super-2 number, since 2×121012103100² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28810306 + ... + 28814505.

Almost surely, 2^121012103100 is an apocalyptic number.

121012103100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121012103100 is an abundant number, since it is smaller than the sum of its proper divisors (279134591428).

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

121012103100 is a wasteful number, since it uses less digits than its factorization.

121012103100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57624835 (or 57624828 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 121012103100 its reverse (1301210121), we get a palindrome (122313313221).

The spelling of 121012103100 in words is "one hundred twenty-one billion, twelve million, one hundred three thousand, one hundred".