21303312331100 has 36 divisors (see below), whose sum is σ = 46747605618000. Its totient is φ = 8425579704960.

The previous prime is 21303312331087. The next prime is 21303312331111. The reversal of 21303312331100 is 113321330312.

It is a super-2 number, since 2×21303312331100² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1196806400 + ... + 1196824199.

It is an arithmetic number, because the mean of its divisors is an integer number (1298544600500).

Almost surely, 2^{21303312331100} is an apocalyptic number.

21303312331100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21303312331100 is an abundant number, since it is smaller than the sum of its proper divisors (25444293286900).

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

21303312331100 is a wasteful number, since it uses less digits than its factorization.

21303312331100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2393630702 (or 2393630695 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 21303312331100 its reverse (113321330312), we get a palindrome (21416633661412).

The spelling of 21303312331100 in words is "twenty-one trillion, three hundred three billion, three hundred twelve million, three hundred thirty-one thousand, one hundred".