121201002212100 has 72 divisors (see below), whose sum is σ = 354899898598560. Its totient is φ = 31930866439680.

The previous prime is 121201002212089. The next prime is 121201002212119. The reversal of 121201002212100 is 1212200102121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 121201002212100.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2433730165 + ... + 2433779964.

Almost surely, 2^{121201002212100} is an apocalyptic number.

121201002212100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121201002212100 is an abundant number, since it is smaller than the sum of its proper divisors (233698896386460).

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

121201002212100 is a wasteful number, since it uses less digits than its factorization.

121201002212100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4867510229 (or 4867510222 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121201002212100 its reverse (1212200102121), we get a palindrome (122413202314221).

The spelling of 121201002212100 in words is "one hundred twenty-one trillion, two hundred one billion, two million, two hundred twelve thousand, one hundred".