20522127231 has 12 divisors (see below), whose sum is σ = 29876484352. Its totient is φ = 13573689696.

The previous prime is 20522127209. The next prime is 20522127233. The reversal of 20522127231 is 13272122502.

20522127231 is a `hidden beast` number, since 205 + 221 + 2 + 7 + 231 = 666.

It is not a de Polignac number, because 20522127231 - 2¹⁸ = 20521865087 is a prime.

It is a super-2 number, since 2×20522127231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20522127195 and 20522127204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20522127233) 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 11 ways as a sum of consecutive naturals, for example, 8976166 + ... + 8978451.

Almost surely, 2^20522127231 is an apocalyptic number.

20522127231 is a deficient number, since it is larger than the sum of its proper divisors (9354357121).

20522127231 is a wasteful number, since it uses less digits than its factorization.

20522127231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17954750 (or 17954747 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

Adding to 20522127231 its reverse (13272122502), we get a palindrome (33794249733).

The spelling of 20522127231 in words is "twenty billion, five hundred twenty-two million, one hundred twenty-seven thousand, two hundred thirty-one".