21302133108 has 12 divisors (see below), whose sum is σ = 49704977280. Its totient is φ = 7100711032.

The previous prime is 21302133091. The next prime is 21302133133. The reversal of 21302133108 is 80133120312.

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

It is a congruent number.

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, 887588868 + ... + 887588891.

It is an arithmetic number, because the mean of its divisors is an integer number (4142081440).

Almost surely, 2^21302133108 is an apocalyptic number.

It is an amenable number.

21302133108 is an abundant number, since it is smaller than the sum of its proper divisors (28402844172).

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

21302133108 is a wasteful number, since it uses less digits than its factorization.

21302133108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1775177766 (or 1775177764 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The spelling of 21302133108 in words is "twenty-one billion, three hundred two million, one hundred thirty-three thousand, one hundred eight".