20522205131 has 2 divisors, whose sum is σ = 20522205132. Its totient is φ = 20522205130.

The previous prime is 20522205107. The next prime is 20522205133. The reversal of 20522205131 is 13150222502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20522205131 - 2¹⁴ = 20522188747 is a prime.

It is a super-2 number, since 2×20522205131² (a number of 21 digits) contains 22 as substring.

Together with 20522205133, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20522205097 and 20522205106.

It is not a weakly prime, because it can be changed into another prime (20522205133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10261102565 + 10261102566.

It is an arithmetic number, because the mean of its divisors is an integer number (10261102566).

Almost surely, 2^20522205131 is an apocalyptic number.

20522205131 is a deficient number, since it is larger than the sum of its proper divisors (1).

20522205131 is an equidigital number, since it uses as much as digits as its factorization.

20522205131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 20522205131 its reverse (13150222502), we get a palindrome (33672427633).

The spelling of 20522205131 in words is "twenty billion, five hundred twenty-two million, two hundred five thousand, one hundred thirty-one".