1221332331032 has 32 divisors (see below), whose sum is σ = 2645131522320. Its totient is φ = 522495114240.

The previous prime is 1221332331029. The next prime is 1221332331059. The reversal of 1221332331032 is 2301332331221.

It is a junction number, because it is equal to n+sod(n) for n = 1221332330992 and 1221332331010.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 408197813 + ... + 408200804.

Almost surely, 2^{1221332331032} is an apocalyptic number.

It is an amenable number.

1221332331032 is an abundant number, since it is smaller than the sum of its proper divisors (1423799191288).

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

1221332331032 is a wasteful number, since it uses less digits than its factorization.

1221332331032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816398651 (or 816398647 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 1221332331032 its reverse (2301332331221), we get a palindrome (3522664662253).

The spelling of 1221332331032 in words is "one trillion, two hundred twenty-one billion, three hundred thirty-two million, three hundred thirty-one thousand, thirty-two".