21122520022 has 8 divisors (see below), whose sum is σ = 32130030672. Its totient is φ = 10412509800.

The previous prime is 21122519981. The next prime is 21122520049. The reversal of 21122520022 is 22002522112.

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, 74374929 + ... + 74375212.

It is an arithmetic number, because the mean of its divisors is an integer number (4016253834).

Almost surely, 2^21122520022 is an apocalyptic number.

21122520022 is a deficient number, since it is larger than the sum of its proper divisors (11007510650).

21122520022 is a wasteful number, since it uses less digits than its factorization.

21122520022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148750214.

The product of its (nonzero) digits is 320, while the sum is 19.

The spelling of 21122520022 in words is "twenty-one billion, one hundred twenty-two million, five hundred twenty thousand, twenty-two".