21100323320032 has 24 divisors (see below), whose sum is σ = 45317739858552. Its totient is φ = 9591056054400.

The previous prime is 21100323320029. The next prime is 21100323320057. The reversal of 21100323320032 is 23002332300112.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 21100323319985 and 21100323320012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29972049819 + ... + 29972050522.

It is an arithmetic number, because the mean of its divisors is an integer number (1888239160773).

Almost surely, 2^{21100323320032} is an apocalyptic number.

21100323320032 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21100323320032 is an abundant number, since it is smaller than the sum of its proper divisors (24217416538520).

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

21100323320032 is a wasteful number, since it uses less digits than its factorization.

21100323320032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59944100362 (or 59944100354 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21100323320032 its reverse (23002332300112), we get a palindrome (44102655620144).

The spelling of 21100323320032 in words is "twenty-one trillion, one hundred billion, three hundred twenty-three million, three hundred twenty thousand, thirty-two".