21232233223212 has 96 divisors (see below), whose sum is σ = 54184148928000. Its totient is φ = 6417529920000.

The previous prime is 21232233223193. The next prime is 21232233223231.

It is a happy number.

21232233223212 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (21232233223193) and next prime (21232233223231).

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 21232233223212.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 615391962 + ... + 615426462.

It is an arithmetic number, because the mean of its divisors is an integer number (564418218000).

Almost surely, 2^{21232233223212} is an apocalyptic number.

21232233223212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21232233223212 is an abundant number, since it is smaller than the sum of its proper divisors (32951915704788).

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

21232233223212 is a wasteful number, since it uses less digits than its factorization.

21232233223212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46327 (or 46325 counting only the distinct ones).

The product of its digits is 20736, while the sum is 30.

It can be divided in two parts, 2123223 and 3223212, that added together give a palindrome (5346435).

The spelling of 21232233223212 in words is "twenty-one trillion, two hundred thirty-two billion, two hundred thirty-three million, two hundred twenty-three thousand, two hundred twelve".