21330570330 has 48 divisors (see below), whose sum is σ = 55466806824. Its totient is φ = 5687400960.

The previous prime is 21330570269. The next prime is 21330570347. The reversal of 21330570330 is 3307503312.

21330570330 is a `hidden beast` number, since 21 + 3 + 305 + 7 + 0 + 330 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 18756124209 + 2574446121 = 136953^2 + 50739^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21330570294 and 21330570303.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1146462 + ... + 1164918.

Almost surely, 2^21330570330 is an apocalyptic number.

21330570330 is an abundant number, since it is smaller than the sum of its proper divisors (34136236494).

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

21330570330 is a wasteful number, since it uses less digits than its factorization.

21330570330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31311 (or 31308 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 27.

The spelling of 21330570330 in words is "twenty-one billion, three hundred thirty million, five hundred seventy thousand, three hundred thirty".