22400971 has 2 divisors, whose sum is σ = 22400972. Its totient is φ = 22400970.

The previous prime is 22400957. The next prime is 22401017. The reversal of 22400971 is 17900422.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22400971 - 2⁷ = 22400843 is a prime.

It is not a weakly prime, because it can be changed into another prime (22400921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11200485 + 11200486.

It is an arithmetic number, because the mean of its divisors is an integer number (11200486).

Almost surely, 2^22400971 is an apocalyptic number.

22400971 is a deficient number, since it is larger than the sum of its proper divisors (1).

22400971 is an equidigital number, since it uses as much as digits as its factorization.

22400971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 22400971 is about 4732.9664059657. The cubic root of 22400971 is about 281.8960223946.

The spelling of 22400971 in words is "twenty-two million, four hundred thousand, nine hundred seventy-one".