1223220012313 has 8 divisors (see below), whose sum is σ = 1317343450248. Its totient is φ = 1129100801664.

The previous prime is 1223220012251. The next prime is 1223220012347. The reversal of 1223220012313 is 3132100223221.

It can be written as a sum of positive squares in 4 ways, for example, as 181977321744 + 1041242690569 = 426588^2 + 1020413^2 .

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 1223220012313 - 2¹⁷ = 1223219881241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223220012353) 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, 442606 + ... + 1625527.

It is an arithmetic number, because the mean of its divisors is an integer number (164667931281).

Almost surely, 2^{1223220012313} is an apocalyptic number.

1223220012313 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1223220012313 is a deficient number, since it is larger than the sum of its proper divisors (94123437935).

1223220012313 is a wasteful number, since it uses less digits than its factorization.

1223220012313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2113643.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1223220012313 its reverse (3132100223221), we get a palindrome (4355320235534).

The spelling of 1223220012313 in words is "one trillion, two hundred twenty-three billion, two hundred twenty million, twelve thousand, three hundred thirteen".