21003127332 has 24 divisors (see below), whose sum is σ = 53462506272. Its totient is φ = 6364584000.

The previous prime is 21003127289. The next prime is 21003127333. The reversal of 21003127332 is 23372130012.

It is a super-2 number, since 2×21003127332² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21003127333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79557169 + ... + 79557432.

It is an arithmetic number, because the mean of its divisors is an integer number (2227604428).

Almost surely, 2^21003127332 is an apocalyptic number.

21003127332 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21003127332 is an abundant number, since it is smaller than the sum of its proper divisors (32459378940).

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

21003127332 is a wasteful number, since it uses less digits than its factorization.

21003127332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159114619 (or 159114617 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 24.

Adding to 21003127332 its reverse (23372130012), we get a palindrome (44375257344).

The spelling of 21003127332 in words is "twenty-one billion, three million, one hundred twenty-seven thousand, three hundred thirty-two".