22102112211251 has 2 divisors, whose sum is σ = 22102112211252. Its totient is φ = 22102112211250.

The previous prime is 22102112211239. The next prime is 22102112211341. The reversal of 22102112211251 is 15211221120122.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22102112211251 is a prime.

It is a super-3 number, since 3×22102112211251³ (a number of 41 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (22102112211451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11051056105625 + 11051056105626.

It is an arithmetic number, because the mean of its divisors is an integer number (11051056105626).

Almost surely, 2^{22102112211251} is an apocalyptic number.

22102112211251 is a deficient number, since it is larger than the sum of its proper divisors (1).

22102112211251 is an equidigital number, since it uses as much as digits as its factorization.

22102112211251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 23.

Adding to 22102112211251 its reverse (15211221120122), we get a palindrome (37313333331373).

The spelling of 22102112211251 in words is "twenty-two trillion, one hundred two billion, one hundred twelve million, two hundred eleven thousand, two hundred fifty-one".