22106399 has 12 divisors (see below), whose sum is σ = 25957800. Its totient is φ = 18769968.

The previous prime is 22106387. The next prime is 22106401. The reversal of 22106399 is 99360122.

It is a de Polignac number, because none of the positive numbers 2^k-22106399 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 (22106099) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3272 + ... + 7410.

It is an arithmetic number, because the mean of its divisors is an integer number (2163150).

Almost surely, 2^22106399 is an apocalyptic number.

22106399 is a deficient number, since it is larger than the sum of its proper divisors (3851401).

22106399 is a wasteful number, since it uses less digits than its factorization.

22106399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4262 (or 4255 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 22106399 is about 4701.7442508074. The cubic root of 22106399 is about 280.6549252565.

The spelling of 22106399 in words is "twenty-two million, one hundred six thousand, three hundred ninety-nine".