22121010043631 has 2 divisors, whose sum is σ = 22121010043632. Its totient is φ = 22121010043630.

The previous prime is 22121010043609. The next prime is 22121010043637. The reversal of 22121010043631 is 13634001012122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22121010043631 - 2²⁶ = 22120942934767 is a prime.

It is a super-3 number, since 3×22121010043631³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 22121010043631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22121010043637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060505021815 + 11060505021816.

It is an arithmetic number, because the mean of its divisors is an integer number (11060505021816).

Almost surely, 2^{22121010043631} is an apocalyptic number.

22121010043631 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121010043631 is an equidigital number, since it uses as much as digits as its factorization.

22121010043631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 22121010043631 its reverse (13634001012122), we get a palindrome (35755011055753).

The spelling of 22121010043631 in words is "twenty-two trillion, one hundred twenty-one billion, ten million, forty-three thousand, six hundred thirty-one".