21346123122 has 48 divisors (see below), whose sum is σ = 46468131840. Its totient is φ = 7081862400.

The previous prime is 21346123121. The next prime is 21346123133. The reversal of 21346123122 is 22132164312.

21346123122 is a `hidden beast` number, since 2 + 1 + 34 + 612 + 3 + 12 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (21346123121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7017922 + ... + 7020962.

It is an arithmetic number, because the mean of its divisors is an integer number (968086080).

Almost surely, 2^21346123122 is an apocalyptic number.

21346123122 is an abundant number, since it is smaller than the sum of its proper divisors (25122008718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21346123122 is a wasteful number, since it uses less digits than its factorization.

21346123122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4759 (or 4756 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

Adding to 21346123122 its reverse (22132164312), we get a palindrome (43478287434).

The spelling of 21346123122 in words is "twenty-one billion, three hundred forty-six million, one hundred twenty-three thousand, one hundred twenty-two".