22122845 has 4 divisors (see below), whose sum is σ = 26547420. Its totient is φ = 17698272.

The previous prime is 22122839. The next prime is 22122851. The reversal of 22122845 is 54822122.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (22122839) and next prime (22122851).

It can be written as a sum of positive squares in 2 ways, for example, as 9406489 + 12716356 = 3067^2 + 3566^2 .

It is a cyclic number.

It is not a de Polignac number, because 22122845 - 2⁸ = 22122589 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2212280 + ... + 2212289.

It is an arithmetic number, because the mean of its divisors is an integer number (6636855).

Almost surely, 2^22122845 is an apocalyptic number.

It is an amenable number.

22122845 is a deficient number, since it is larger than the sum of its proper divisors (4424575).

22122845 is an equidigital number, since it uses as much as digits as its factorization.

22122845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4424574.

The product of its digits is 2560, while the sum is 26.

The square root of 22122845 is about 4703.4928510629. The cubic root of 22122845 is about 280.7245055135.

Adding to 22122845 its reverse (54822122), we get a palindrome (76944967).

The spelling of 22122845 in words is "twenty-two million, one hundred twenty-two thousand, eight hundred forty-five".