21332130916 has 24 divisors (see below), whose sum is σ = 38309123160. Its totient is φ = 10387584000.

The previous prime is 21332130913. The next prime is 21332130943. The reversal of 21332130916 is 61903123312.

It can be written as a sum of positive squares in 4 ways, for example, as 1065761316 + 20266369600 = 32646^2 + 142360^2 .

It is not an unprimeable number, because it can be changed into a prime (21332130913) 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, 20985 + ... + 207616.

It is an arithmetic number, because the mean of its divisors is an integer number (1596213465).

Almost surely, 2^21332130916 is an apocalyptic number.

It is an amenable number.

21332130916 is a deficient number, since it is larger than the sum of its proper divisors (16976992244).

21332130916 is a wasteful number, since it uses less digits than its factorization.

21332130916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229215 (or 229213 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 31.

The spelling of 21332130916 in words is "twenty-one billion, three hundred thirty-two million, one hundred thirty thousand, nine hundred sixteen".