21023333122 has 16 divisors (see below), whose sum is σ = 34461460512. Its totient is φ = 9539493120.

The previous prime is 21023333117. The next prime is 21023333159. The reversal of 21023333122 is 22133332012.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 21023333093 and 21023333102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 815388 + ... + 840775.

It is an arithmetic number, because the mean of its divisors is an integer number (2153841282).

Almost surely, 2^21023333122 is an apocalyptic number.

21023333122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21023333122 is a deficient number, since it is larger than the sum of its proper divisors (13438127390).

21023333122 is a wasteful number, since it uses less digits than its factorization.

21023333122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1656753.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21023333122 its reverse (22133332012), we get a palindrome (43156665134).

It can be divided in two parts, 210 and 23333122, that added together give a palindrome (23333332).

The spelling of 21023333122 in words is "twenty-one billion, twenty-three million, three hundred thirty-three thousand, one hundred twenty-two".