21622723199 has 16 divisors (see below), whose sum is σ = 27005633280. Its totient is φ = 16819229760.

The previous prime is 21622723189. The next prime is 21622723211. The reversal of 21622723199 is 99132722612.

It is a cyclic number.

It is not a de Polignac number, because 21622723199 - 2¹² = 21622719103 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 (21622723139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202949 + ... + 290574.

It is an arithmetic number, because the mean of its divisors is an integer number (1687852080).

Almost surely, 2^21622723199 is an apocalyptic number.

21622723199 is a deficient number, since it is larger than the sum of its proper divisors (5382910081).

21622723199 is a wasteful number, since it uses less digits than its factorization.

21622723199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494110.

The product of its digits is 163296, while the sum is 44.

The spelling of 21622723199 in words is "twenty-one billion, six hundred twenty-two million, seven hundred twenty-three thousand, one hundred ninety-nine".