22122398 has 4 divisors (see below), whose sum is σ = 33183600. Its totient is φ = 11061198.

The previous prime is 22122391. The next prime is 22122409. The reversal of 22122398 is 89322122.

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

It is a self number, because there is not a number n which added to its sum of digits gives 22122398.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5530598 + ... + 5530601.

It is an arithmetic number, because the mean of its divisors is an integer number (8295900).

Almost surely, 2^22122398 is an apocalyptic number.

22122398 is a deficient number, since it is larger than the sum of its proper divisors (11061202).

22122398 is a wasteful number, since it uses less digits than its factorization.

22122398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11061201.

The product of its digits is 3456, while the sum is 29.

The square root of 22122398 is about 4703.4453329448. The cubic root of 22122398 is about 280.7226147878.

The spelling of 22122398 in words is "twenty-two million, one hundred twenty-two thousand, three hundred ninety-eight".