21322331233100 has 144 divisors (see below), whose sum is σ = 48635587123200. Its totient is φ = 8098383237120.

The previous prime is 21322331233097. The next prime is 21322331233163. The reversal of 21322331233100 is 133213322312.

It is a super-2 number, since 2×21322331233100² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21322331233100.

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, 237506021 + ... + 237595779.

It is an arithmetic number, because the mean of its divisors is an integer number (337747132800).

Almost surely, 2^{21322331233100} is an apocalyptic number.

21322331233100 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 21322331233100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24317793561600).

21322331233100 is an abundant number, since it is smaller than the sum of its proper divisors (27313255890100).

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

21322331233100 is a wasteful number, since it uses less digits than its factorization.

21322331233100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90552 (or 90545 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 21322331233100 its reverse (133213322312), we get a palindrome (21455544555412).

The spelling of 21322331233100 in words is "twenty-one trillion, three hundred twenty-two billion, three hundred thirty-one million, two hundred thirty-three thousand, one hundred".