10021131020 has 24 divisors (see below), whose sum is σ = 21178422384. Its totient is φ = 3982919616.

The previous prime is 10021131017. The next prime is 10021131067. The reversal of 10021131020 is 2013112001.

It is a junction number, because it is equal to n+sod(n) for n = 10021130992 and 10021131010.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1592582 + ... + 1598861.

It is an arithmetic number, because the mean of its divisors is an integer number (882434266).

Almost surely, 2^10021131020 is an apocalyptic number.

10021131020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10021131020 is an abundant number, since it is smaller than the sum of its proper divisors (11157291364).

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

10021131020 is a wasteful number, since it uses less digits than its factorization.

10021131020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3191609 (or 3191607 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 10021131020 its reverse (2013112001), we get a palindrome (12034243021).

The spelling of 10021131020 in words is "ten billion, twenty-one million, one hundred thirty-one thousand, twenty".