1331031213122 has 24 divisors (see below), whose sum is σ = 2202732604404. Its totient is φ = 602731107264.

The previous prime is 1331031213067. The next prime is 1331031213173. The reversal of 1331031213122 is 2213121301331.

It can be written as a sum of positive squares in 6 ways, for example, as 22658979841 + 1308372233281 = 150529^2 + 1143841^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37132673 + ... + 37168500.

Almost surely, 2^{1331031213122} is an apocalyptic number.

1331031213122 is a deficient number, since it is larger than the sum of its proper divisors (871701391282).

1331031213122 is a wasteful number, since it uses less digits than its factorization.

1331031213122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74301254 (or 74301241 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1331031213122 its reverse (2213121301331), we get a palindrome (3544152514453).

The spelling of 1331031213122 in words is "one trillion, three hundred thirty-one billion, thirty-one million, two hundred thirteen thousand, one hundred twenty-two".