9002131021 has 8 divisors (see below), whose sum is σ = 9719027864. Its totient is φ = 8288723520.

The previous prime is 9002131001. The next prime is 9002131067. The reversal of 9002131021 is 1201312009.

It can be written as a sum of positive squares in 4 ways, for example, as 807355396 + 8194775625 = 28414^2 + 90525^2 .

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 9002131021 - 2⁹ = 9002130509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9002131021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9002131001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 866970 + ... + 877291.

It is an arithmetic number, because the mean of its divisors is an integer number (1214878483).

Almost surely, 2^9002131021 is an apocalyptic number.

It is an amenable number.

9002131021 is a deficient number, since it is larger than the sum of its proper divisors (716896843).

9002131021 is a wasteful number, since it uses less digits than its factorization.

9002131021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1744671.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 9002131021 is about 94879.5606071192. The cubic root of 9002131021 is about 2080.2479842555.

The spelling of 9002131021 in words is "nine billion, two million, one hundred thirty-one thousand, twenty-one".