220220220331213 has 4 divisors (see below), whose sum is σ = 220220344430460. Its totient is φ = 220220096231968.

The previous prime is 220220220331159. The next prime is 220220220331229. The reversal of 220220220331213 is 312133022022022.

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 92817462809124 + 127402757522089 = 9634182^2 + 11287283^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220220220331213 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 (220220220331273) 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, 59348608 + ... + 62949961.

It is an arithmetic number, because the mean of its divisors is an integer number (55055086107615).

Almost surely, 2^{220220220331213} is an apocalyptic number.

It is an amenable number.

220220220331213 is a deficient number, since it is larger than the sum of its proper divisors (124099247).

220220220331213 is a wasteful number, since it uses less digits than its factorization.

220220220331213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124099246.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 220220220331213 its reverse (312133022022022), we get a palindrome (532353242353235).

The spelling of 220220220331213 in words is "two hundred twenty trillion, two hundred twenty billion, two hundred twenty million, three hundred thirty-one thousand, two hundred thirteen".