21044023432422 has 16 divisors (see below), whose sum is σ = 43445725796352. Its totient is φ = 6788394655560.

The previous prime is 21044023432387. The next prime is 21044023432469. The reversal of 21044023432422 is 22423432044012.

It is a happy number.

It is a congruent number.

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, 56569955278 + ... + 56569955649.

It is an arithmetic number, because the mean of its divisors is an integer number (2715357862272).

Almost surely, 2^{21044023432422} is an apocalyptic number.

21044023432422 is an abundant number, since it is smaller than the sum of its proper divisors (22401702363930).

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

21044023432422 is a wasteful number, since it uses less digits than its factorization.

21044023432422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113139910963.

The product of its (nonzero) digits is 73728, while the sum is 33.

Adding to 21044023432422 its reverse (22423432044012), we get a palindrome (43467455476434).

The spelling of 21044023432422 in words is "twenty-one trillion, forty-four billion, twenty-three million, four hundred thirty-two thousand, four hundred twenty-two".