22222312201231 has 2 divisors, whose sum is σ = 22222312201232. Its totient is φ = 22222312201230.

The previous prime is 22222312201223. The next prime is 22222312201261. The reversal of 22222312201231 is 13210221322222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22222312201231 - 2³ = 22222312201223 is a prime.

It is a super-2 number, since 2×22222312201231² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22222312201196 and 22222312201205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22222312201261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11111156100615 + 11111156100616.

It is an arithmetic number, because the mean of its divisors is an integer number (11111156100616).

Almost surely, 2^{22222312201231} is an apocalyptic number.

22222312201231 is a deficient number, since it is larger than the sum of its proper divisors (1).

22222312201231 is an equidigital number, since it uses as much as digits as its factorization.

22222312201231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 22222312201231 its reverse (13210221322222), we get a palindrome (35432533523453).

The spelling of 22222312201231 in words is "twenty-two trillion, two hundred twenty-two billion, three hundred twelve million, two hundred one thousand, two hundred thirty-one".