212221321232 has 40 divisors (see below), whose sum is σ = 424521495552. Its totient is φ = 102668659200.

The previous prime is 212221321223. The next prime is 212221321253. The reversal of 212221321232 is 232123122212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 212221321198 and 212221321207.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2843432 + ... + 2917112.

Almost surely, 2^212221321232 is an apocalyptic number.

It is an amenable number.

212221321232 is an abundant number, since it is smaller than the sum of its proper divisors (212300174320).

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

212221321232 is a wasteful number, since it uses less digits than its factorization.

212221321232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79527 (or 79521 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

Adding to 212221321232 its reverse (232123122212), we get a palindrome (444344443444).

The spelling of 212221321232 in words is "two hundred twelve billion, two hundred twenty-one million, three hundred twenty-one thousand, two hundred thirty-two".