21122343122 has 16 divisors (see below), whose sum is σ = 32142614400. Its totient is φ = 10408902240.

The previous prime is 21122343113. The next prime is 21122343133. The reversal of 21122343122 is 22134322112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135422 + ... + 246137.

It is an arithmetic number, because the mean of its divisors is an integer number (2008913400).

Almost surely, 2^21122343122 is an apocalyptic number.

21122343122 is a deficient number, since it is larger than the sum of its proper divisors (11020271278).

21122343122 is a wasteful number, since it uses less digits than its factorization.

21122343122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381961.

The product of its digits is 1152, while the sum is 23.

Adding to 21122343122 its reverse (22134322112), we get a palindrome (43256665234).

The spelling of 21122343122 in words is "twenty-one billion, one hundred twenty-two million, three hundred forty-three thousand, one hundred twenty-two".