121021120200112 has 80 divisors (see below), whose sum is σ = 272789884080000. Its totient is φ = 51401268126720.

The previous prime is 121021120200103. The next prime is 121021120200199. The reversal of 121021120200112 is 211002021120121.

It is a super-2 number, since 2×121021120200112² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145081362 + ... + 145913137.

It is an arithmetic number, because the mean of its divisors is an integer number (3409873551000).

Almost surely, 2^{121021120200112} is an apocalyptic number.

It is an amenable number.

121021120200112 is an abundant number, since it is smaller than the sum of its proper divisors (151768763879888).

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

121021120200112 is a wasteful number, since it uses less digits than its factorization.

121021120200112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290994674 (or 290994668 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121021120200112 its reverse (211002021120121), we get a palindrome (332023141320233).

The spelling of 121021120200112 in words is "one hundred twenty-one trillion, twenty-one billion, one hundred twenty million, two hundred thousand, one hundred twelve".