21144010444232 has 64 divisors (see below), whose sum is σ = 43850320407600. Its totient is φ = 9494639078400.

The previous prime is 21144010444217. The next prime is 21144010444261. The reversal of 21144010444232 is 23244401044112.

It can be written as a sum of positive squares in 8 ways, for example, as 4909122647716 + 16234887796516 = 2215654^2 + 4029254^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108835982 + ... + 109030082.

Almost surely, 2^{21144010444232} is an apocalyptic number.

It is an amenable number.

21144010444232 is an abundant number, since it is smaller than the sum of its proper divisors (22706309963368).

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

21144010444232 is a wasteful number, since it uses less digits than its factorization.

21144010444232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222466 (or 222462 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 32.

Adding to 21144010444232 its reverse (23244401044112), we get a palindrome (44388411488344).

The spelling of 21144010444232 in words is "twenty-one trillion, one hundred forty-four billion, ten million, four hundred forty-four thousand, two hundred thirty-two".