23212222221232 has 80 divisors (see below), whose sum is σ = 50218963280640. Its totient is φ = 10302397459200.

The previous prime is 23212222221229. The next prime is 23212222221263.

23212222221232 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 23212222221232.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23668894 + ... + 24630082.

It is an arithmetic number, because the mean of its divisors is an integer number (627737041008).

Almost surely, 2^{23212222221232} is an apocalyptic number.

23212222221232 is a gapful number since it is divisible by the number (22) 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 23212222221232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25109481640320).

23212222221232 is an abundant number, since it is smaller than the sum of its proper divisors (27006741059408).

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

23212222221232 is a wasteful number, since it uses less digits than its factorization.

23212222221232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964442 (or 964436 counting only the distinct ones).

The product of its digits is 9216, while the sum is 28.

It can be divided in two parts, 2321222 and 2221232, that added together give a palindrome (4542454).

The spelling of 23212222221232 in words is "twenty-three trillion, two hundred twelve billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred thirty-two".