1211223321232 has 10 divisors (see below), whose sum is σ = 2346745184918. Its totient is φ = 605611660608.

The previous prime is 1211223321197. The next prime is 1211223321233. The reversal of 1211223321232 is 2321233221121.

It can be written as a sum of positive squares in only one way, i.e., 1198157916816 + 13065404416 = 1094604^2 + 114304^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1211223321197 and 1211223321206.

It is not an unprimeable number, because it can be changed into a prime (1211223321233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37850728773 + ... + 37850728804.

Almost surely, 2^{1211223321232} is an apocalyptic number.

It is an amenable number.

1211223321232 is a deficient number, since it is larger than the sum of its proper divisors (1135521863686).

1211223321232 is an equidigital number, since it uses as much as digits as its factorization.

1211223321232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75701457585 (or 75701457579 counting only the distinct ones).

The product of its digits is 1728, while the sum is 25.

Adding to 1211223321232 its reverse (2321233221121), we get a palindrome (3532456542353).

The spelling of 1211223321232 in words is "one trillion, two hundred eleven billion, two hundred twenty-three million, three hundred twenty-one thousand, two hundred thirty-two".