32112220323232 has 144 divisors (see below), whose sum is σ = 74651817209760. Its totient is φ = 13554892657152.

The previous prime is 32112220323229. The next prime is 32112220323263. The reversal of 32112220323232 is 23232302221123.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 32112220323232.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 822463903 + ... + 822502945.

It is an arithmetic number, because the mean of its divisors is an integer number (518415397290).

Almost surely, 2^{32112220323232} is an apocalyptic number.

32112220323232 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32112220323232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37325908604880).

32112220323232 is an abundant number, since it is smaller than the sum of its proper divisors (42539596886528).

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

32112220323232 is a wasteful number, since it uses less digits than its factorization.

32112220323232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46963 (or 46948 counting only the distinct ones).

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

Adding to 32112220323232 its reverse (23232302221123), we get a palindrome (55344522544355).

The spelling of 32112220323232 in words is "thirty-two trillion, one hundred twelve billion, two hundred twenty million, three hundred twenty-three thousand, two hundred thirty-two".