1021253133504 has 28 divisors (see below), whose sum is σ = 2702065582904. Its totient is φ = 340417711104.

The previous prime is 1021253133469. The next prime is 1021253133559. The reversal of 1021253133504 is 4053313521201.

1021253133504 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2659513177 + ... + 2659513560.

Almost surely, 2^{1021253133504} is an apocalyptic number.

It is an amenable number.

1021253133504 is an abundant number, since it is smaller than the sum of its proper divisors (1680812449400).

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

1021253133504 is an equidigital number, since it uses as much as digits as its factorization.

1021253133504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5319026752 (or 5319026742 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 1021253133504 its reverse (4053313521201), we get a palindrome (5074566654705).

The spelling of 1021253133504 in words is "one trillion, twenty-one billion, two hundred fifty-three million, one hundred thirty-three thousand, five hundred four".