20021131310 has 16 divisors (see below), whose sum is σ = 37604907936. Its totient is φ = 7660258848.

The previous prime is 20021131297. The next prime is 20021131327. The reversal of 20021131310 is 1313112002.

It is a super-2 number, since 2×20021131310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 43523969 + ... + 43524428.

It is an arithmetic number, because the mean of its divisors is an integer number (2350306746).

Almost surely, 2^20021131310 is an apocalyptic number.

20021131310 is a deficient number, since it is larger than the sum of its proper divisors (17583776626).

20021131310 is a wasteful number, since it uses less digits than its factorization.

20021131310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87048427.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 20021131310 its reverse (1313112002), we get a palindrome (21334243312).

The spelling of 20021131310 in words is "twenty billion, twenty-one million, one hundred thirty-one thousand, three hundred ten".