21044241332 has 6 divisors (see below), whose sum is σ = 36827422338. Its totient is φ = 10522120664.

The previous prime is 21044241313. The next prime is 21044241377. The reversal of 21044241332 is 23314244012.

It can be written as a sum of positive squares in only one way, i.e., 20723329936 + 320911396 = 143956^2 + 17914^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2630530163 + ... + 2630530170.

It is an arithmetic number, because the mean of its divisors is an integer number (6137903723).

Almost surely, 2^21044241332 is an apocalyptic number.

It is an amenable number.

21044241332 is a deficient number, since it is larger than the sum of its proper divisors (15783181006).

21044241332 is a wasteful number, since it uses less digits than its factorization.

21044241332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5261060337 (or 5261060335 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 21044241332 its reverse (23314244012), we get a palindrome (44358485344).

The spelling of 21044241332 in words is "twenty-one billion, forty-four million, two hundred forty-one thousand, three hundred thirty-two".