21822122318 has 8 divisors (see below), whose sum is σ = 34658664912. Its totient is φ = 10269234016.

The previous prime is 21822122303. The next prime is 21822122341. The reversal of 21822122318 is 81322122812.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320913530 + ... + 320913597.

It is an arithmetic number, because the mean of its divisors is an integer number (4332333114).

Almost surely, 2^21822122318 is an apocalyptic number.

21822122318 is a deficient number, since it is larger than the sum of its proper divisors (12836542594).

21822122318 is a wasteful number, since it uses less digits than its factorization.

21822122318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641827146.

The product of its digits is 6144, while the sum is 32.

The spelling of 21822122318 in words is "twenty-one billion, eight hundred twenty-two million, one hundred twenty-two thousand, three hundred eighteen".