21922199 has 8 divisors (see below), whose sum is σ = 23961840. Its totient is φ = 19933056.

The previous prime is 21922193. The next prime is 21922223. The reversal of 21922199 is 99122912.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21922199 - 2⁴ = 21922183 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 (21922193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11714 + ... + 13455.

It is an arithmetic number, because the mean of its divisors is an integer number (2995230).

Almost surely, 2^21922199 is an apocalyptic number.

21922199 is a deficient number, since it is larger than the sum of its proper divisors (2039641).

21922199 is a wasteful number, since it uses less digits than its factorization.

21922199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25249.

The product of its digits is 5832, while the sum is 35.

The square root of 21922199 is about 4682.1147999595. The cubic root of 21922199 is about 279.8732376885.

The spelling of 21922199 in words is "twenty-one million, nine hundred twenty-two thousand, one hundred ninety-nine".