22012012211951 has 2 divisors, whose sum is σ = 22012012211952. Its totient is φ = 22012012211950.

The previous prime is 22012012211933. The next prime is 22012012212023. The reversal of 22012012211951 is 15911221021022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22012012211951 - 2²² = 22012008017647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22012012201951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11006006105975 + 11006006105976.

It is an arithmetic number, because the mean of its divisors is an integer number (11006006105976).

Almost surely, 2^{22012012211951} is an apocalyptic number.

22012012211951 is a deficient number, since it is larger than the sum of its proper divisors (1).

22012012211951 is an equidigital number, since it uses as much as digits as its factorization.

22012012211951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 29.

Adding to 22012012211951 its reverse (15911221021022), we get a palindrome (37923233232973).

The spelling of 22012012211951 in words is "twenty-two trillion, twelve billion, twelve million, two hundred eleven thousand, nine hundred fifty-one".