10020021231 has 48 divisors (see below), whose sum is σ = 15389361792. Its totient is φ = 5750184000.

The previous prime is 10020021211. The next prime is 10020021233. The reversal of 10020021231 is 13212002001.

It is not a de Polignac number, because 10020021231 - 2⁷ = 10020021103 is a prime.

It is a super-2 number, since 2×10020021231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020021233) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1760316 + ... + 1765998.

It is an arithmetic number, because the mean of its divisors is an integer number (320611704).

Almost surely, 2^10020021231 is an apocalyptic number.

10020021231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10020021231 is a deficient number, since it is larger than the sum of its proper divisors (5369340561).

10020021231 is a wasteful number, since it uses less digits than its factorization.

10020021231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5844 (or 5821 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 10020021231 its reverse (13212002001), we get a palindrome (23232023232).

The spelling of 10020021231 in words is "ten billion, twenty million, twenty-one thousand, two hundred thirty-one".