21984925922 has 8 divisors (see below), whose sum is σ = 33229125072. Its totient is φ = 10908550900.

The previous prime is 21984925901. The next prime is 21984925927. The reversal of 21984925922 is 22952948912.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (21984925927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41955704 + ... + 41956227.

It is an arithmetic number, because the mean of its divisors is an integer number (4153640634).

Almost surely, 2^21984925922 is an apocalyptic number.

21984925922 is a deficient number, since it is larger than the sum of its proper divisors (11244199150).

21984925922 is a wasteful number, since it uses less digits than its factorization.

21984925922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83912064.

The product of its digits is 1866240, while the sum is 53.

The spelling of 21984925922 in words is "twenty-one billion, nine hundred eighty-four million, nine hundred twenty-five thousand, nine hundred twenty-two".