1021570998812 has 48 divisors (see below), whose sum is σ = 2206436037120. Its totient is φ = 403012193472.

The previous prime is 1021570998697. The next prime is 1021570998839. The reversal of 1021570998812 is 2188990751201.

It is a super-2 number, since 2×1021570998812² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3778118 + ... + 4039469.

It is an arithmetic number, because the mean of its divisors is an integer number (45967417440).

Almost surely, 2^{1021570998812} is an apocalyptic number.

It is an amenable number.

1021570998812 is an abundant number, since it is smaller than the sum of its proper divisors (1184865038308).

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

1021570998812 is a wasteful number, since it uses less digits than its factorization.

1021570998812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7817970 (or 7817968 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 53.

The spelling of 1021570998812 in words is "one trillion, twenty-one billion, five hundred seventy million, nine hundred ninety-eight thousand, eight hundred twelve".