22420213531 has 2 divisors, whose sum is σ = 22420213532. Its totient is φ = 22420213530.

The previous prime is 22420213511. The next prime is 22420213561. The reversal of 22420213531 is 13531202422.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22420213531 - 2⁵ = 22420213499 is a prime.

It is a super-2 number, since 2×22420213531² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22420213496 and 22420213505.

It is not a weakly prime, because it can be changed into another prime (22420213511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11210106765 + 11210106766.

It is an arithmetic number, because the mean of its divisors is an integer number (11210106766).

Almost surely, 2^22420213531 is an apocalyptic number.

22420213531 is a deficient number, since it is larger than the sum of its proper divisors (1).

22420213531 is an equidigital number, since it uses as much as digits as its factorization.

22420213531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 22420213531 its reverse (13531202422), we get a palindrome (35951415953).

The spelling of 22420213531 in words is "twenty-two billion, four hundred twenty million, two hundred thirteen thousand, five hundred thirty-one".