21011133096 has 24 divisors (see below), whose sum is σ = 56905152330. Its totient is φ = 7003711008.

The previous prime is 21011133079. The next prime is 21011133137. The reversal of 21011133096 is 69033111012.

21011133096 is a `hidden beast` number, since 210 + 111 + 330 + 9 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10706040900 + 10305092196 = 103470^2 + 101514^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 145910575 + ... + 145910718.

Almost surely, 2^21011133096 is an apocalyptic number.

It is an amenable number.

21011133096 is an abundant number, since it is smaller than the sum of its proper divisors (35894019234).

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

21011133096 is a wasteful number, since it uses less digits than its factorization.

21011133096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291821305 (or 291821298 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The spelling of 21011133096 in words is "twenty-one billion, eleven million, one hundred thirty-three thousand, ninety-six".