22222131520231 has 2 divisors, whose sum is σ = 22222131520232. Its totient is φ = 22222131520230.

The previous prime is 22222131520217. The next prime is 22222131520243. The reversal of 22222131520231 is 13202513122222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22222131520231 - 2³⁵ = 22187771781863 is a prime.

It is a super-2 number, since 2×22222131520231² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22222131520231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22222131520031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11111065760115 + 11111065760116.

It is an arithmetic number, because the mean of its divisors is an integer number (11111065760116).

Almost surely, 2^{22222131520231} is an apocalyptic number.

22222131520231 is a deficient number, since it is larger than the sum of its proper divisors (1).

22222131520231 is an equidigital number, since it uses as much as digits as its factorization.

22222131520231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 22222131520231 its reverse (13202513122222), we get a palindrome (35424644642453).

The spelling of 22222131520231 in words is "twenty-two trillion, two hundred twenty-two billion, one hundred thirty-one million, five hundred twenty thousand, two hundred thirty-one".