1021115552253 has 16 divisors (see below), whose sum is σ = 1416472559616. Its totient is φ = 653596942320.

The previous prime is 1021115552231. The next prime is 1021115552263. The reversal of 1021115552253 is 3522555111201.

It is not a de Polignac number, because 1021115552253 - 2⁸ = 1021115551997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021115552203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43215501 + ... + 43239122.

It is an arithmetic number, because the mean of its divisors is an integer number (88529534976).

Almost surely, 2^{1021115552253} is an apocalyptic number.

It is an amenable number.

1021115552253 is a deficient number, since it is larger than the sum of its proper divisors (395357007363).

1021115552253 is a wasteful number, since it uses less digits than its factorization.

1021115552253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86454784.

The product of its (nonzero) digits is 15000, while the sum is 33.

The spelling of 1021115552253 in words is "one trillion, twenty-one billion, one hundred fifteen million, five hundred fifty-two thousand, two hundred fifty-three".