22111999971 has 8 divisors (see below), whose sum is σ = 29494844160. Its totient is φ = 14735244552.

The previous prime is 22111999967. The next prime is 22111999979. The reversal of 22111999971 is 17999911122.

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

It is not a de Polignac number, because 22111999971 - 2² = 22111999967 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22111999979) 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, 1513711 + ... + 1528248.

It is an arithmetic number, because the mean of its divisors is an integer number (3686855520).

Almost surely, 2^22111999971 is an apocalyptic number.

22111999971 is a deficient number, since it is larger than the sum of its proper divisors (7382844189).

22111999971 is a wasteful number, since it uses less digits than its factorization.

22111999971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3044385.

The product of its digits is 183708, while the sum is 51.

The spelling of 22111999971 in words is "twenty-two billion, one hundred eleven million, nine hundred ninety-nine thousand, nine hundred seventy-one".