22942217 has 2 divisors, whose sum is σ = 22942218. Its totient is φ = 22942216.

The previous prime is 22942189. The next prime is 22942223. The reversal of 22942217 is 71224922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22762441 + 179776 = 4771^2 + 424^2 .

It is a cyclic number.

It is not a de Polignac number, because 22942217 - 2¹² = 22938121 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22942217.

It is not a weakly prime, because it can be changed into another prime (22942267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11471108 + 11471109.

It is an arithmetic number, because the mean of its divisors is an integer number (11471109).

Almost surely, 2^22942217 is an apocalyptic number.

It is an amenable number.

22942217 is a deficient number, since it is larger than the sum of its proper divisors (1).

22942217 is an equidigital number, since it uses as much as digits as its factorization.

22942217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 29.

The square root of 22942217 is about 4789.8034406435. The cubic root of 22942217 is about 284.1483429542.

The spelling of 22942217 in words is "twenty-two million, nine hundred forty-two thousand, two hundred seventeen".