22121210131 has 2 divisors, whose sum is σ = 22121210132. Its totient is φ = 22121210130.

The previous prime is 22121210081. The next prime is 22121210143. The reversal of 22121210131 is 13101212122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22121210131 - 2²⁵ = 22087655699 is a prime.

It is a super-2 number, since 2×22121210131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22121210431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060605065 + 11060605066.

It is an arithmetic number, because the mean of its divisors is an integer number (11060605066).

Almost surely, 2^22121210131 is an apocalyptic number.

22121210131 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121210131 is an equidigital number, since it uses as much as digits as its factorization.

22121210131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 22121210131 its reverse (13101212122), we get a palindrome (35222422253).

The spelling of 22121210131 in words is "twenty-two billion, one hundred twenty-one million, two hundred ten thousand, one hundred thirty-one".