1021313031012 has 72 divisors (see below), whose sum is σ = 2677555974912. Its totient is φ = 340401204000.

The previous prime is 1021313031001. The next prime is 1021313031019. The reversal of 1021313031012 is 2101303131201.

1021313031012 is a `hidden beast` number, since 1 + 0 + 213 + 130 + 310 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1021313031019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9932262 + ... + 10034562.

Almost surely, 2^{1021313031012} is an apocalyptic number.

1021313031012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021313031012 is an abundant number, since it is smaller than the sum of its proper divisors (1656242943900).

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

1021313031012 is a wasteful number, since it uses less digits than its factorization.

1021313031012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112591 (or 112577 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1021313031012 its reverse (2101303131201), we get a palindrome (3122616162213).

The spelling of 1021313031012 in words is "one trillion, twenty-one billion, three hundred thirteen million, thirty-one thousand, twelve".