220232123213 has 4 divisors (see below), whose sum is σ = 220798273020. Its totient is φ = 219665973408.

The previous prime is 220232123207. The next prime is 220232123227. The reversal of 220232123213 is 312321232022.

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 124752359209 + 95479764004 = 353203^2 + 308998^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220232123213 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 (220232123113) 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, 283074320 + ... + 283075097.

It is an arithmetic number, because the mean of its divisors is an integer number (55199568255).

Almost surely, 2^220232123213 is an apocalyptic number.

It is an amenable number.

220232123213 is a deficient number, since it is larger than the sum of its proper divisors (566149807).

220232123213 is an equidigital number, since it uses as much as digits as its factorization.

220232123213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566149806.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 220232123213 its reverse (312321232022), we get a palindrome (532553355235).

The spelling of 220232123213 in words is "two hundred twenty billion, two hundred thirty-two million, one hundred twenty-three thousand, two hundred thirteen".