220231222213 has 4 divisors (see below), whose sum is σ = 229806492768. Its totient is φ = 210655951660.

The previous prime is 220231222207. The next prime is 220231222217. The reversal of 220231222213 is 312222132022.

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 not a de Polignac number, because 220231222213 - 2¹⁷ = 220231091141 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 (220231222217) 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, 4787635243 + ... + 4787635288.

It is an arithmetic number, because the mean of its divisors is an integer number (57451623192).

Almost surely, 2^220231222213 is an apocalyptic number.

220231222213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

220231222213 is a deficient number, since it is larger than the sum of its proper divisors (9575270555).

220231222213 is an equidigital number, since it uses as much as digits as its factorization.

220231222213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9575270554.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 220231222213 its reverse (312222132022), we get a palindrome (532453354235).

The spelling of 220231222213 in words is "two hundred twenty billion, two hundred thirty-one million, two hundred twenty-two thousand, two hundred thirteen".