1231002102120 has 192 divisors, whose sum is σ = 4548649193280. Its totient is φ = 264820598784.

The previous prime is 1231002102059. The next prime is 1231002102133. The reversal of 1231002102120 is 212012001321.

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 1231002102120.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6057514 + ... + 6257433.

It is an arithmetic number, because the mean of its divisors is an integer number (23690881215).

Almost surely, 2^{1231002102120} is an apocalyptic number.

1231002102120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231002102120 is an abundant number, since it is smaller than the sum of its proper divisors (3317647091160).

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

1231002102120 is a wasteful number, since it uses less digits than its factorization.

1231002102120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12314992 (or 12314981 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1231002102120 its reverse (212012001321), we get a palindrome (1443014103441).

The spelling of 1231002102120 in words is "one trillion, two hundred thirty-one billion, two million, one hundred two thousand, one hundred twenty".