22154166401 has 2 divisors, whose sum is σ = 22154166402. Its totient is φ = 22154166400.

The previous prime is 22154166323. The next prime is 22154166427. The reversal of 22154166401 is 10466145122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21822380176 + 331786225 = 147724^2 + 18215^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22154166401 is a prime.

It is not a weakly prime, because it can be changed into another prime (22154166451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11077083200 + 11077083201.

It is an arithmetic number, because the mean of its divisors is an integer number (11077083201).

Almost surely, 2^22154166401 is an apocalyptic number.

It is an amenable number.

22154166401 is a deficient number, since it is larger than the sum of its proper divisors (1).

22154166401 is an equidigital number, since it uses as much as digits as its factorization.

22154166401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 32.

The spelling of 22154166401 in words is "twenty-two billion, one hundred fifty-four million, one hundred sixty-six thousand, four hundred one".