1221330112132 has 12 divisors (see below), whose sum is σ = 2301737519116. Its totient is φ = 563690820960.

The previous prime is 1221330112127. The next prime is 1221330112139. The reversal of 1221330112132 is 2312110331221.

It can be written as a sum of positive squares in 2 ways, for example, as 319107490816 + 902222621316 = 564896^2 + 949854^2 .

It is not an unprimeable number, because it can be changed into a prime (1221330112139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11743558719 + ... + 11743558822.

Almost surely, 2^{1221330112132} is an apocalyptic number.

It is an amenable number.

1221330112132 is a deficient number, since it is larger than the sum of its proper divisors (1080407406984).

1221330112132 is a wasteful number, since it uses less digits than its factorization.

1221330112132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23487117558 (or 23487117556 counting only the distinct ones).

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

Adding to 1221330112132 its reverse (2312110331221), we get a palindrome (3533440443353).

The spelling of 1221330112132 in words is "one trillion, two hundred twenty-one billion, three hundred thirty million, one hundred twelve thousand, one hundred thirty-two".