21031002021302 has 64 divisors (see below), whose sum is σ = 40758236467200. Its totient is φ = 7915103706240.

The previous prime is 21031002021247. The next prime is 21031002021331. The reversal of 21031002021302 is 20312020013012.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 31256777 + ... + 31922532.

It is an arithmetic number, because the mean of its divisors is an integer number (636847444800).

Almost surely, 2^{21031002021302} is an apocalyptic number.

21031002021302 is a deficient number, since it is larger than the sum of its proper divisors (19727234445898).

21031002021302 is a wasteful number, since it uses less digits than its factorization.

21031002021302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63179421.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21031002021302 its reverse (20312020013012), we get a palindrome (41343022034314).

The spelling of 21031002021302 in words is "twenty-one trillion, thirty-one billion, two million, twenty-one thousand, three hundred two".