1312223221122 has 32 divisors (see below), whose sum is σ = 2866624858944. Its totient is φ = 397144459200.

The previous prime is 1312223221061. The next prime is 1312223221187. The reversal of 1312223221122 is 2211223222131.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1312223221092 and 1312223221101.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 12420529 + ... + 12525732.

It is an arithmetic number, because the mean of its divisors is an integer number (89582026842).

Almost surely, 2^{1312223221122} is an apocalyptic number.

1312223221122 is an abundant number, since it is smaller than the sum of its proper divisors (1554401637822).

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

1312223221122 is a wasteful number, since it uses less digits than its factorization.

1312223221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24947074.

The product of its digits is 1152, while the sum is 24.

Adding to 1312223221122 its reverse (2211223222131), we get a palindrome (3523446443253).

The spelling of 1312223221122 in words is "one trillion, three hundred twelve billion, two hundred twenty-three million, two hundred twenty-one thousand, one hundred twenty-two".