1331231321122 has 4 divisors (see below), whose sum is σ = 1996846981686. Its totient is φ = 665615660560.

The previous prime is 1331231321117. The next prime is 1331231321131. The reversal of 1331231321122 is 2211231321331.

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

It can be written as a sum of positive squares in only one way, i.e., 782448162721 + 548783158401 = 884561^2 + 740799^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332807830279 + ... + 332807830282.

Almost surely, 2^{1331231321122} is an apocalyptic number.

1331231321122 is a deficient number, since it is larger than the sum of its proper divisors (665615660564).

1331231321122 is an equidigital number, since it uses as much as digits as its factorization.

1331231321122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665615660563.

The product of its digits is 1296, while the sum is 25.

Adding to 1331231321122 its reverse (2211231321331), we get a palindrome (3542462642453).

The spelling of 1331231321122 in words is "one trillion, three hundred thirty-one billion, two hundred thirty-one million, three hundred twenty-one thousand, one hundred twenty-two".