12220221311213 has 4 divisors (see below), whose sum is σ = 12220633031808. Its totient is φ = 12219809590620.

The previous prime is 12220221311209. The next prime is 12220221311231. The reversal of 12220221311213 is 31211312202221.

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 12220221311213 - 2² = 12220221311209 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 (12220221311113) 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, 205815773 + ... + 205875138.

It is an arithmetic number, because the mean of its divisors is an integer number (3055158257952).

Almost surely, 2^{12220221311213} is an apocalyptic number.

It is an amenable number.

12220221311213 is a deficient number, since it is larger than the sum of its proper divisors (411720595).

12220221311213 is an equidigital number, since it uses as much as digits as its factorization.

12220221311213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411720594.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 12220221311213 its reverse (31211312202221), we get a palindrome (43431533513434).

The spelling of 12220221311213 in words is "twelve trillion, two hundred twenty billion, two hundred twenty-one million, three hundred eleven thousand, two hundred thirteen".