21323402122044 has 96 divisors (see below), whose sum is σ = 55804629888000. Its totient is φ = 6281711100160.

The previous prime is 21323402121941. The next prime is 21323402122069. The reversal of 21323402122044 is 44022120432312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10609299 + ... + 12458090.

It is an arithmetic number, because the mean of its divisors is an integer number (581298228000).

Almost surely, 2^{21323402122044} is an apocalyptic number.

It is an amenable number.

21323402122044 is an abundant number, since it is smaller than the sum of its proper divisors (34481227765956).

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

21323402122044 is a wasteful number, since it uses less digits than its factorization.

21323402122044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23067603 (or 23067601 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 21323402122044 its reverse (44022120432312), we get a palindrome (65345522554356).

The spelling of 21323402122044 in words is "twenty-one trillion, three hundred twenty-three billion, four hundred two million, one hundred twenty-two thousand, forty-four".