22266135656251 has 2 divisors, whose sum is σ = 22266135656252. Its totient is φ = 22266135656250.

The previous prime is 22266135656239. The next prime is 22266135656257. The reversal of 22266135656251 is 15265653166222.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22266135656251 is a prime.

It is not a weakly prime, because it can be changed into another prime (22266135656257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11133067828125 + 11133067828126.

It is an arithmetic number, because the mean of its divisors is an integer number (11133067828126).

Almost surely, 2^{22266135656251} is an apocalyptic number.

22266135656251 is a deficient number, since it is larger than the sum of its proper divisors (1).

22266135656251 is an equidigital number, since it uses as much as digits as its factorization.

22266135656251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776000, while the sum is 52.

The spelling of 22266135656251 in words is "twenty-two trillion, two hundred sixty-six billion, one hundred thirty-five million, six hundred fifty-six thousand, two hundred fifty-one".