1221332033212 has 12 divisors (see below), whose sum is σ = 2137546997656. Its totient is φ = 610604319600.

The previous prime is 1221332033197. The next prime is 1221332033221. The reversal of 1221332033212 is 2123302331221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15379698 + ... + 15458905.

Almost surely, 2^{1221332033212} is an apocalyptic number.

It is an amenable number.

1221332033212 is a deficient number, since it is larger than the sum of its proper divisors (916214964444).

1221332033212 is a wasteful number, since it uses less digits than its factorization.

1221332033212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30848508 (or 30848506 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 1221332033212 its reverse (2123302331221), we get a palindrome (3344634364433).

The spelling of 1221332033212 in words is "one trillion, two hundred twenty-one billion, three hundred thirty-two million, thirty-three thousand, two hundred twelve".