22269991 has 2 divisors, whose sum is σ = 22269992. Its totient is φ = 22269990.

The previous prime is 22269959. The next prime is 22270007. The reversal of 22269991 is 19996222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22269991 - 2⁵ = 22269959 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22269901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11134995 + 11134996.

It is an arithmetic number, because the mean of its divisors is an integer number (11134996).

Almost surely, 2^22269991 is an apocalyptic number.

22269991 is a deficient number, since it is larger than the sum of its proper divisors (1).

22269991 is an equidigital number, since it uses as much as digits as its factorization.

22269991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 40.

The square root of 22269991 is about 4719.1091320291. The cubic root of 22269991 is about 281.3455263328.

The spelling of 22269991 in words is "twenty-two million, two hundred sixty-nine thousand, nine hundred ninety-one".