1012102120120 has 64 divisors (see below), whose sum is σ = 2802744342720. Its totient is φ = 320313636864.

The previous prime is 1012102120111. The next prime is 1012102120123. The reversal of 1012102120120 is 210212012101.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 1012102120120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012102120123) by changing a digit.

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, 139021377 + ... + 139028656.

It is an arithmetic number, because the mean of its divisors is an integer number (43792880355).

Almost surely, 2^{1012102120120} is an apocalyptic number.

1012102120120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012102120120 is an abundant number, since it is smaller than the sum of its proper divisors (1790642222600).

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

1012102120120 is a wasteful number, since it uses less digits than its factorization.

1012102120120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278050064 (or 278050060 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1012102120120 its reverse (210212012101), we get a palindrome (1222314132221).

The spelling of 1012102120120 in words is "one trillion, twelve billion, one hundred two million, one hundred twenty thousand, one hundred twenty".