21032112122 has 48 divisors (see below), whose sum is σ = 38880311040. Its totient is φ = 8478594432.

The previous prime is 21032112083. The next prime is 21032112133. The reversal of 21032112122 is 22121123012.

21032112122 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 21032112122.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4527533 + ... + 4532175.

It is an arithmetic number, because the mean of its divisors is an integer number (810006480).

Almost surely, 2^21032112122 is an apocalyptic number.

21032112122 is a deficient number, since it is larger than the sum of its proper divisors (17848198918).

21032112122 is a wasteful number, since it uses less digits than its factorization.

21032112122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7395 (or 7388 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21032112122 its reverse (22121123012), we get a palindrome (43153235134).

The spelling of 21032112122 in words is "twenty-one billion, thirty-two million, one hundred twelve thousand, one hundred twenty-two".