21331100411232 has 48 divisors (see below), whose sum is σ = 58941198509760. Its totient is φ = 6736136971392.

The previous prime is 21331100411219. The next prime is 21331100411237. The reversal of 21331100411232 is 23211400113312.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21331100411237) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5847339298 + ... + 5847342945.

It is an arithmetic number, because the mean of its divisors is an integer number (1227941635620).

Almost surely, 2^{21331100411232} is an apocalyptic number.

It is an amenable number.

21331100411232 is an abundant number, since it is smaller than the sum of its proper divisors (37610098098528).

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

21331100411232 is a wasteful number, since it uses less digits than its factorization.

21331100411232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11694682275 (or 11694682267 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 21331100411232 its reverse (23211400113312), we get a palindrome (44542500524544).

The spelling of 21331100411232 in words is "twenty-one trillion, three hundred thirty-one billion, one hundred million, four hundred eleven thousand, two hundred thirty-two".