21113323113300 has 144 divisors (see below), whose sum is σ = 66652202652672. Its totient is φ = 5117545929600.

The previous prime is 21113323113283. The next prime is 21113323113331. The reversal of 21113323113300 is 331132331112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19818837 + ... + 20856963.

Almost surely, 2^{21113323113300} is an apocalyptic number.

21113323113300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21113323113300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33326101326336).

21113323113300 is an abundant number, since it is smaller than the sum of its proper divisors (45538879539372).

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

21113323113300 is a wasteful number, since it uses less digits than its factorization.

21113323113300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044318 (or 1044311 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 21113323113300 its reverse (331132331112), we get a palindrome (21444455444412).

The spelling of 21113323113300 in words is "twenty-one trillion, one hundred thirteen billion, three hundred twenty-three million, one hundred thirteen thousand, three hundred".