22122345 has 32 divisors (see below), whose sum is σ = 41149440. Its totient is φ = 9938880.

The previous prime is 22122341. The next prime is 22122367. The reversal of 22122345 is 54322122.

It is not a de Polignac number, because 22122345 - 2² = 22122341 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (22122341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4410 + ... + 7980.

It is an arithmetic number, because the mean of its divisors is an integer number (1285920).

Almost surely, 2^22122345 is an apocalyptic number.

It is an amenable number.

22122345 is a deficient number, since it is larger than the sum of its proper divisors (19027095).

22122345 is a wasteful number, since it uses less digits than its factorization.

22122345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3645.

The product of its digits is 960, while the sum is 21.

The square root of 22122345 is about 4703.4396987737. The cubic root of 22122345 is about 280.7223906061.

Adding to 22122345 its reverse (54322122), we get a palindrome (76444467).

The spelling of 22122345 in words is "twenty-two million, one hundred twenty-two thousand, three hundred forty-five".