20211322131 has 96 divisors (see below), whose sum is σ = 39276357120. Its totient is φ = 9672307200.

The previous prime is 20211322129. The next prime is 20211322141. The reversal of 20211322131 is 13122311202.

20211322131 is a `hidden beast` number, since 2 + 0 + 211 + 322 + 131 = 666.

It is not a de Polignac number, because 20211322131 - 2¹ = 20211322129 is a prime.

It is a super-2 number, since 2×20211322131² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20211322141) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5142175 + ... + 5146103.

It is an arithmetic number, because the mean of its divisors is an integer number (409128720).

Almost surely, 2^20211322131 is an apocalyptic number.

20211322131 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20211322131 is a deficient number, since it is larger than the sum of its proper divisors (19065034989).

20211322131 is a wasteful number, since it uses less digits than its factorization.

20211322131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4537 (or 4534 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 20211322131 its reverse (13122311202), we get a palindrome (33333633333).

The spelling of 20211322131 in words is "twenty billion, two hundred eleven million, three hundred twenty-two thousand, one hundred thirty-one".