22266961 has 2 divisors, whose sum is σ = 22266962. Its totient is φ = 22266960.

The previous prime is 22266953. The next prime is 22266973. The reversal of 22266961 is 16966222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20930625 + 1336336 = 4575^2 + 1156^2 .

It is a cyclic number.

It is not a de Polignac number, because 22266961 - 2³ = 22266953 is a prime.

It is not a weakly prime, because it can be changed into another prime (22266901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11133480 + 11133481.

It is an arithmetic number, because the mean of its divisors is an integer number (11133481).

Almost surely, 2^22266961 is an apocalyptic number.

It is an amenable number.

22266961 is a deficient number, since it is larger than the sum of its proper divisors (1).

22266961 is an equidigital number, since it uses as much as digits as its factorization.

22266961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 34.

The square root of 22266961 is about 4718.7880859390. The cubic root of 22266961 is about 281.3327660281.

The spelling of 22266961 in words is "twenty-two million, two hundred sixty-six thousand, nine hundred sixty-one".