21233130133300 has 36 divisors (see below), whose sum is σ = 48786239004300. Its totient is φ = 7993648990720.

The previous prime is 21233130133217. The next prime is 21233130133301. The reversal of 21233130133300 is 333103133212.

It can be written as a sum of positive squares in 6 ways, for example, as 2700776707216 + 18532353426084 = 1643404^2 + 4304922^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21233130133301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6245036575 + ... + 6245039974.

It is an arithmetic number, because the mean of its divisors is an integer number (1355173305675).

Almost surely, 2^{21233130133300} is an apocalyptic number.

21233130133300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21233130133300 is an abundant number, since it is smaller than the sum of its proper divisors (27553108871000).

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

21233130133300 is a wasteful number, since it uses less digits than its factorization.

21233130133300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12490076580 (or 12490076573 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 21233130133300 its reverse (333103133212), we get a palindrome (21566233266512).

The spelling of 21233130133300 in words is "twenty-one trillion, two hundred thirty-three billion, one hundred thirty million, one hundred thirty-three thousand, three hundred".