21202133310 has 48 divisors (see below), whose sum is σ = 56615435136. Its totient is φ = 5501093184.

The previous prime is 21202133299. The next prime is 21202133327. The reversal of 21202133310 is 1333120212.

21202133310 is a `hidden beast` number, since 2 + 120 + 213 + 331 + 0 = 666.

It is a super-2 number, since 2×21202133310² (a number of 21 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3180174 + ... + 3186833.

It is an arithmetic number, because the mean of its divisors is an integer number (1179488232).

Almost surely, 2^21202133310 is an apocalyptic number.

21202133310 is an abundant number, since it is smaller than the sum of its proper divisors (35413301826).

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

21202133310 is a wasteful number, since it uses less digits than its factorization.

21202133310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6367057 (or 6367054 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21202133310 its reverse (1333120212), we get a palindrome (22535253522).

The spelling of 21202133310 in words is "twenty-one billion, two hundred two million, one hundred thirty-three thousand, three hundred ten".