1222313444213 has 4 divisors (see below), whose sum is σ = 1222351449420. Its totient is φ = 1222275439008.

The previous prime is 1222313444207. The next prime is 1222313444221. The reversal of 1222313444213 is 3124443132221.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 786029415889 + 436284028324 = 886583^2 + 660518^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222313444213 - 2⁴ = 1222313444197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1222313444213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222313444273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18954320 + ... + 19018697.

It is an arithmetic number, because the mean of its divisors is an integer number (305587862355).

Almost surely, 2^{1222313444213} is an apocalyptic number.

It is an amenable number.

1222313444213 is a deficient number, since it is larger than the sum of its proper divisors (38005207).

1222313444213 is an equidigital number, since it uses as much as digits as its factorization.

1222313444213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38005206.

The product of its digits is 27648, while the sum is 32.

Adding to 1222313444213 its reverse (3124443132221), we get a palindrome (4346756576434).

The spelling of 1222313444213 in words is "one trillion, two hundred twenty-two billion, three hundred thirteen million, four hundred forty-four thousand, two hundred thirteen".