22122407 has 4 divisors (see below), whose sum is σ = 22134336. Its totient is φ = 22110480.

The previous prime is 22122391. The next prime is 22122409. The reversal of 22122407 is 70422122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22122407 - 2⁴ = 22122391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2519 + ... + 7112.

It is an arithmetic number, because the mean of its divisors is an integer number (5533584).

Almost surely, 2^22122407 is an apocalyptic number.

22122407 is a deficient number, since it is larger than the sum of its proper divisors (11929).

22122407 is an equidigital number, since it uses as much as digits as its factorization.

22122407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11928.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 22122407 is about 4703.4462896901. The cubic root of 22122407 is about 280.7226528563.

Adding to 22122407 its reverse (70422122), we get a palindrome (92544529).

The spelling of 22122407 in words is "twenty-two million, one hundred twenty-two thousand, four hundred seven".