22121102012231 has 2 divisors, whose sum is σ = 22121102012232. Its totient is φ = 22121102012230.

The previous prime is 22121102012033. The next prime is 22121102012237. The reversal of 22121102012231 is 13221020112122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22121102012231 - 2¹⁸ = 22121101750087 is a prime.

It is a super-2 number, since 2×22121102012231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22121102012237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060551006115 + 11060551006116.

It is an arithmetic number, because the mean of its divisors is an integer number (11060551006116).

Almost surely, 2^{22121102012231} is an apocalyptic number.

22121102012231 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121102012231 is an equidigital number, since it uses as much as digits as its factorization.

22121102012231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 22121102012231 its reverse (13221020112122), we get a palindrome (35342122124353).

The spelling of 22121102012231 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred two million, twelve thousand, two hundred thirty-one".