22270823 has 2 divisors, whose sum is σ = 22270824. Its totient is φ = 22270822.

The previous prime is 22270819. The next prime is 22270841. The reversal of 22270823 is 32807222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22270823 - 2² = 22270819 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 22270792 and 22270801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22270813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11135411 + 11135412.

It is an arithmetic number, because the mean of its divisors is an integer number (11135412).

Almost surely, 2^22270823 is an apocalyptic number.

22270823 is a deficient number, since it is larger than the sum of its proper divisors (1).

22270823 is an equidigital number, since it uses as much as digits as its factorization.

22270823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 22270823 is about 4719.1972834371. The cubic root of 22270823 is about 281.3490299499.

The spelling of 22270823 in words is "twenty-two million, two hundred seventy thousand, eight hundred twenty-three".