21011200332 has 12 divisors (see below), whose sum is σ = 49026134136. Its totient is φ = 7003733440.

The previous prime is 21011200297. The next prime is 21011200349. The reversal of 21011200332 is 23300211012.

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

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, 875466669 + ... + 875466692.

It is an arithmetic number, because the mean of its divisors is an integer number (4085511178).

Almost surely, 2^21011200332 is an apocalyptic number.

It is an amenable number.

21011200332 is an abundant number, since it is smaller than the sum of its proper divisors (28014933804).

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

21011200332 is a wasteful number, since it uses less digits than its factorization.

21011200332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1750933368 (or 1750933366 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21011200332 its reverse (23300211012), we get a palindrome (44311411344).

The spelling of 21011200332 in words is "twenty-one billion, eleven million, two hundred thousand, three hundred thirty-two".