21650055122 has 8 divisors (see below), whose sum is σ = 33230317296. Its totient is φ = 10573282692.

The previous prime is 21650055121. The next prime is 21650055139. The reversal of 21650055122 is 22155005612.

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 (21650055121) 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, 125872328 + ... + 125872499.

It is an arithmetic number, because the mean of its divisors is an integer number (4153789662).

Almost surely, 2^21650055122 is an apocalyptic number.

21650055122 is a deficient number, since it is larger than the sum of its proper divisors (11580262174).

21650055122 is a wasteful number, since it uses less digits than its factorization.

21650055122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251744872.

The product of its (nonzero) digits is 6000, while the sum is 29.

The spelling of 21650055122 in words is "twenty-one billion, six hundred fifty million, fifty-five thousand, one hundred twenty-two".