1012002120120 has 64 divisors (see below), whose sum is σ = 3195796176000. Its totient is φ = 255663692928.

The previous prime is 1012002120097. The next prime is 1012002120121. The reversal of 1012002120120 is 210212002101.

It is a super-2 number, since 2×1012002120120² (a number of 25 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 1012002120096 and 1012002120105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012002120121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221928010 + ... + 221932569.

It is an arithmetic number, because the mean of its divisors is an integer number (49934315250).

Almost surely, 2^{1012002120120} is an apocalyptic number.

1012002120120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012002120120 is an abundant number, since it is smaller than the sum of its proper divisors (2183794055880).

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

1012002120120 is a wasteful number, since it uses less digits than its factorization.

1012002120120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443860612 (or 443860608 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1012002120120 its reverse (210212002101), we get a palindrome (1222214122221).

The spelling of 1012002120120 in words is "one trillion, twelve billion, two million, one hundred twenty thousand, one hundred twenty".