21044112132 has 12 divisors (see below), whose sum is σ = 49102928336. Its totient is φ = 7014704040.

The previous prime is 21044112127. The next prime is 21044112163. The reversal of 21044112132 is 23121144012.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 21044112099 and 21044112108.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 876837994 + ... + 876838017.

Almost surely, 2^21044112132 is an apocalyptic number.

It is an amenable number.

21044112132 is an abundant number, since it is smaller than the sum of its proper divisors (28058816204).

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

21044112132 is a wasteful number, since it uses less digits than its factorization.

21044112132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1753676018 (or 1753676016 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 21044112132 its reverse (23121144012), we get a palindrome (44165256144).

The spelling of 21044112132 in words is "twenty-one billion, forty-four million, one hundred twelve thousand, one hundred thirty-two".