1220213323313 has 4 divisors (see below), whose sum is σ = 1220231887728. Its totient is φ = 1220194758900.

The previous prime is 1220213323291. The next prime is 1220213323363. The reversal of 1220213323313 is 3133233120221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1220213323313 - 2⁶ = 1220213323249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220213323363) 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, 9183263 + ... + 9315188.

It is an arithmetic number, because the mean of its divisors is an integer number (305057971932).

Almost surely, 2^{1220213323313} is an apocalyptic number.

It is an amenable number.

1220213323313 is a deficient number, since it is larger than the sum of its proper divisors (18564415).

1220213323313 is an equidigital number, since it uses as much as digits as its factorization.

1220213323313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18564414.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 1220213323313 its reverse (3133233120221), we get a palindrome (4353446443534).

The spelling of 1220213323313 in words is "one trillion, two hundred twenty billion, two hundred thirteen million, three hundred twenty-three thousand, three hundred thirteen".