1221331211032 has 16 divisors (see below), whose sum is σ = 2290046029200. Its totient is φ = 610652269920.

The previous prime is 1221331211027. The next prime is 1221331211039. The reversal of 1221331211032 is 2301121331221.

It is a junction number, because it is equal to n+sod(n) for n = 1221331210994 and 1221331211012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221331211039) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1272219 + ... + 2015242.

It is an arithmetic number, because the mean of its divisors is an integer number (143127876825).

Almost surely, 2^{1221331211032} is an apocalyptic number.

It is an amenable number.

1221331211032 is a deficient number, since it is larger than the sum of its proper divisors (1068714818168).

1221331211032 is a wasteful number, since it uses less digits than its factorization.

1221331211032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3333906 (or 3333902 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1221331211032 its reverse (2301121331221), we get a palindrome (3522452542253).

The spelling of 1221331211032 in words is "one trillion, two hundred twenty-one billion, three hundred thirty-one million, two hundred eleven thousand, thirty-two".