21131020030002 has 16 divisors (see below), whose sum is σ = 42476568184512. Its totient is φ = 7007918655920.

The previous prime is 21131020029979. The next prime is 21131020030007. The reversal of 21131020030002 is 20003002013112.

It is a super-3 number, since 3×21131020030002³ (a number of 41 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21131020030007) 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, 8938670574 + ... + 8938672937.

It is an arithmetic number, because the mean of its divisors is an integer number (2654785511532).

Almost surely, 2^{21131020030002} is an apocalyptic number.

21131020030002 is an abundant number, since it is smaller than the sum of its proper divisors (21345548154510).

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

21131020030002 is a wasteful number, since it uses less digits than its factorization.

21131020030002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17877343713.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21131020030002 its reverse (20003002013112), we get a palindrome (41134022043114).

The spelling of 21131020030002 in words is "twenty-one trillion, one hundred thirty-one billion, twenty million, thirty thousand, two".