1112212221331 has 4 divisors (see below), whose sum is σ = 1112501336752. Its totient is φ = 1111923105912.

The previous prime is 1112212221317. The next prime is 1112212221347. The reversal of 1112212221331 is 1331222122111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1112212221331 - 2⁷ = 1112212221203 is a prime.

It is a super-2 number, since 2×1112212221331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1112212221311) 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, 144551940 + ... + 144559633.

It is an arithmetic number, because the mean of its divisors is an integer number (278125334188).

Almost surely, 2^{1112212221331} is an apocalyptic number.

1112212221331 is a deficient number, since it is larger than the sum of its proper divisors (289115421).

1112212221331 is an equidigital number, since it uses as much as digits as its factorization.

1112212221331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289115420.

The product of its digits is 288, while the sum is 22.

Adding to 1112212221331 its reverse (1331222122111), we get a palindrome (2443434343442).

The spelling of 1112212221331 in words is "one trillion, one hundred twelve billion, two hundred twelve million, two hundred twenty-one thousand, three hundred thirty-one".