1331222222213 has 8 divisors (see below), whose sum is σ = 1434470750328. Its totient is φ = 1228094668224.

The previous prime is 1331222222191. The next prime is 1331222222227. The reversal of 1331222222213 is 3122222221331.

It can be written as a sum of positive squares in 4 ways, for example, as 158036461444 + 1173185760769 = 397538^2 + 1083137^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1331222222213 - 2³⁰ = 1330148480389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331222221213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30220670 + ... + 30264687.

It is an arithmetic number, because the mean of its divisors is an integer number (179308843791).

Almost surely, 2^{1331222222213} is an apocalyptic number.

1331222222213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1331222222213 is a deficient number, since it is larger than the sum of its proper divisors (103248528115).

1331222222213 is a wasteful number, since it uses less digits than its factorization.

1331222222213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60487063.

The product of its digits is 3456, while the sum is 26.

Adding to 1331222222213 its reverse (3122222221331), we get a palindrome (4453444443544).

The spelling of 1331222222213 in words is "one trillion, three hundred thirty-one billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred thirteen".