21030333210 has 64 divisors (see below), whose sum is σ = 56124293760. Its totient is φ = 5603748480.

The previous prime is 21030333173. The next prime is 21030333239. The reversal of 21030333210 is 1233303012.

21030333210 is a `hidden beast` number, since 21 + 0 + 303 + 332 + 10 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 327189 + ... + 386151.

It is an arithmetic number, because the mean of its divisors is an integer number (876942090).

Almost surely, 2^21030333210 is an apocalyptic number.

21030333210 is an abundant number, since it is smaller than the sum of its proper divisors (35093960550).

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

21030333210 is a wasteful number, since it uses less digits than its factorization.

21030333210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60300 (or 60294 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 21030333210 its reverse (1233303012), we get a palindrome (22263636222).

The spelling of 21030333210 in words is "twenty-one billion, thirty million, three hundred thirty-three thousand, two hundred ten".