22921008218 has 4 divisors (see below), whose sum is σ = 34381512330. Its totient is φ = 11460504108.

The previous prime is 22921008199. The next prime is 22921008239. The reversal of 22921008218 is 81280012922.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 22675239889 + 245768329 = 150583^2 + 15677^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5730252053 + ... + 5730252056.

Almost surely, 2^22921008218 is an apocalyptic number.

22921008218 is a deficient number, since it is larger than the sum of its proper divisors (11460504112).

22921008218 is a wasteful number, since it uses less digits than its factorization.

22921008218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11460504111.

The product of its (nonzero) digits is 9216, while the sum is 35.

The spelling of 22921008218 in words is "twenty-two billion, nine hundred twenty-one million, eight thousand, two hundred eighteen".