21033311000308 has 48 divisors (see below), whose sum is σ = 37120850741520. Its totient is φ = 10427748581376.

The previous prime is 21033311000203. The next prime is 21033311000311. The reversal of 21033311000308 is 80300011333012.

It can be written as a sum of positive squares in 8 ways, for example, as 17231481770724 + 3801829229584 = 4151082^2 + 1949828^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1868459416 + ... + 1868470672.

It is an arithmetic number, because the mean of its divisors is an integer number (773351057115).

Almost surely, 2^{21033311000308} is an apocalyptic number.

It is an amenable number.

21033311000308 is a deficient number, since it is larger than the sum of its proper divisors (16087539741212).

21033311000308 is a wasteful number, since it uses less digits than its factorization.

21033311000308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19684 (or 19682 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The spelling of 21033311000308 in words is "twenty-one trillion, thirty-three billion, three hundred eleven million, three hundred eight", and thus it is an aban number.