1221304117332 has 48 divisors (see below), whose sum is σ = 3070159977920. Its totient is φ = 375633808128.

The previous prime is 1221304117309. The next prime is 1221304117367. The reversal of 1221304117332 is 2337114031221.

It is a self number, because there is not a number n which added to its sum of digits gives 1221304117332.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1197082 + ... + 1968657.

Almost surely, 2^{1221304117332} is an apocalyptic number.

1221304117332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1221304117332 is an abundant number, since it is smaller than the sum of its proper divisors (1848855860588).

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

1221304117332 is a wasteful number, since it uses less digits than its factorization.

1221304117332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3168232 (or 3168230 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

Adding to 1221304117332 its reverse (2337114031221), we get a palindrome (3558418148553).

The spelling of 1221304117332 in words is "one trillion, two hundred twenty-one billion, three hundred four million, one hundred seventeen thousand, three hundred thirty-two".