21033101310 has 32 divisors (see below), whose sum is σ = 54362478240. Its totient is φ = 5177378688.

The previous prime is 21033101291. The next prime is 21033101321. The reversal of 21033101310 is 1310133012.

It is a super-2 number, since 2×21033101310² (a number of 21 digits) contains 22 as substring.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21033101310.

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 15 ways as a sum of consecutive naturals, for example, 26965125 + ... + 26965904.

It is an arithmetic number, because the mean of its divisors is an integer number (1698827445).

Almost surely, 2^21033101310 is an apocalyptic number.

21033101310 is an abundant number, since it is smaller than the sum of its proper divisors (33329376930).

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

21033101310 is a wasteful number, since it uses less digits than its factorization.

21033101310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53931052.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 21033101310 its reverse (1310133012), we get a palindrome (22343234322).

The spelling of 21033101310 in words is "twenty-one billion, thirty-three million, one hundred one thousand, three hundred ten".