21232213231332 has 48 divisors (see below), whose sum is σ = 49602589166592. Its totient is φ = 7068726239520.

The previous prime is 21232213231321. The next prime is 21232213231357. The reversal of 21232213231332 is 23313231223212.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 21232213231332.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113701713 + ... + 113888295.

It is an arithmetic number, because the mean of its divisors is an integer number (1033387274304).

Almost surely, 2^{21232213231332} is an apocalyptic number.

It is an amenable number.

21232213231332 is an abundant number, since it is smaller than the sum of its proper divisors (28370375935260).

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

21232213231332 is a wasteful number, since it uses less digits than its factorization.

21232213231332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198168 (or 198166 counting only the distinct ones).

The product of its digits is 15552, while the sum is 30.

Adding to 21232213231332 its reverse (23313231223212), we get a palindrome (44545444454544).

The spelling of 21232213231332 in words is "twenty-one trillion, two hundred thirty-two billion, two hundred thirteen million, two hundred thirty-one thousand, three hundred thirty-two".