21044034132 has 48 divisors (see below), whose sum is σ = 53591688192. Its totient is φ = 6373997280.

The previous prime is 21044034113. The next prime is 21044034139. The reversal of 21044034132 is 23143044012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21044034139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 254613 + ... + 326979.

It is an arithmetic number, because the mean of its divisors is an integer number (1116493504).

Almost surely, 2^21044034132 is an apocalyptic number.

21044034132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21044034132 is an abundant number, since it is smaller than the sum of its proper divisors (32547654060).

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

21044034132 is a wasteful number, since it uses less digits than its factorization.

21044034132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74588 (or 74586 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21044034132 its reverse (23143044012), we get a palindrome (44187078144).

The spelling of 21044034132 in words is "twenty-one billion, forty-four million, thirty-four thousand, one hundred thirty-two".