22116993921251 has 2 divisors, whose sum is σ = 22116993921252. Its totient is φ = 22116993921250.

The previous prime is 22116993921221. The next prime is 22116993921271. The reversal of 22116993921251 is 15212939961122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22116993921251 - 2¹⁸ = 22116993659107 is a prime.

It is a super-2 number, since 2×22116993921251² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22116993921193 and 22116993921202.

It is not a weakly prime, because it can be changed into another prime (22116993921221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11058496960625 + 11058496960626.

It is an arithmetic number, because the mean of its divisors is an integer number (11058496960626).

Almost surely, 2^{22116993921251} is an apocalyptic number.

22116993921251 is a deficient number, since it is larger than the sum of its proper divisors (1).

22116993921251 is an equidigital number, since it uses as much as digits as its factorization.

22116993921251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1049760, while the sum is 53.

The spelling of 22116993921251 in words is "twenty-two trillion, one hundred sixteen billion, nine hundred ninety-three million, nine hundred twenty-one thousand, two hundred fifty-one".