21210333000 has 64 divisors (see below), whose sum is σ = 66176248320. Its totient is φ = 5656088000.

The previous prime is 21210332981. The next prime is 21210333043. The reversal of 21210333000 is 33301212.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 3532056 + ... + 3538055.

It is an arithmetic number, because the mean of its divisors is an integer number (1034003880).

Almost surely, 2^21210333000 is an apocalyptic number.

21210333000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21210333000 is an abundant number, since it is smaller than the sum of its proper divisors (44965915320).

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

21210333000 is a wasteful number, since it uses less digits than its factorization.

21210333000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7070135 (or 7070121 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 21210333000 its reverse (33301212), we get a palindrome (21243634212).

The spelling of 21210333000 in words is "twenty-one billion, two hundred ten million, three hundred thirty-three thousand".