12021121020120 has 32 divisors (see below), whose sum is σ = 36063363060720. Its totient is φ = 3205632272000.

The previous prime is 12021121020059. The next prime is 12021121020169. The reversal of 12021121020120 is 2102012112021.

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 12021121020120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50088004131 + ... + 50088004370.

Almost surely, 2^{12021121020120} is an apocalyptic number.

12021121020120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021121020120 is an abundant number, since it is smaller than the sum of its proper divisors (24042242040600).

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

12021121020120 is a wasteful number, since it uses less digits than its factorization.

12021121020120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100176008515 (or 100176008511 counting only the distinct ones).

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

Adding to 12021121020120 its reverse (2102012112021), we get a palindrome (14123133132141).

The spelling of 12021121020120 in words is "twelve trillion, twenty-one billion, one hundred twenty-one million, twenty thousand, one hundred twenty".