21223302321232 has 80 divisors (see below), whose sum is σ = 46440349984512. Its totient is φ = 9312362588160.

The previous prime is 21223302321203. The next prime is 21223302321239. The reversal of 21223302321232 is 23212320332212.

21223302321232 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×21223302321232² (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 21223302321232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21223302321239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16969293 + ... + 18177004.

Almost surely, 2^{21223302321232} is an apocalyptic number.

21223302321232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21223302321232 is an abundant number, since it is smaller than the sum of its proper divisors (25217047663280).

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

21223302321232 is a wasteful number, since it uses less digits than its factorization.

21223302321232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35146436 (or 35146430 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 21223302321232 its reverse (23212320332212), we get a palindrome (44435622653444).

The spelling of 21223302321232 in words is "twenty-one trillion, two hundred twenty-three billion, three hundred two million, three hundred twenty-one thousand, two hundred thirty-two".