1021152553231 has 8 divisors (see below), whose sum is σ = 1065563061120. Its totient is φ = 976743092952.

The previous prime is 1021152553163. The next prime is 1021152553297. The reversal of 1021152553231 is 1323552511201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1021152553231 - 2¹¹ = 1021152551183 is a prime.

It is a super-2 number, since 2×1021152553231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021152553193 and 1021152553202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021152556231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2237640 + ... + 2655058.

It is an arithmetic number, because the mean of its divisors is an integer number (133195382640).

Almost surely, 2^{1021152553231} is an apocalyptic number.

1021152553231 is a deficient number, since it is larger than the sum of its proper divisors (44410507889).

1021152553231 is a wasteful number, since it uses less digits than its factorization.

1021152553231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523805.

The product of its (nonzero) digits is 9000, while the sum is 31.

The spelling of 1021152553231 in words is "one trillion, twenty-one billion, one hundred fifty-two million, five hundred fifty-three thousand, two hundred thirty-one".