220323203213 has 4 divisors (see below), whose sum is σ = 222594576540. Its totient is φ = 218051829888.

The previous prime is 220323203173. The next prime is 220323203231. The reversal of 220323203213 is 312302323022.

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 63644189284 + 156679013929 = 252278^2 + 395827^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220323203213 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 (220323202213) 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, 1135686518 + ... + 1135686711.

It is an arithmetic number, because the mean of its divisors is an integer number (55648644135).

Almost surely, 2^220323203213 is an apocalyptic number.

It is an amenable number.

220323203213 is a deficient number, since it is larger than the sum of its proper divisors (2271373327).

220323203213 is an equidigital number, since it uses as much as digits as its factorization.

220323203213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2271373326.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 220323203213 its reverse (312302323022), we get a palindrome (532625526235).

The spelling of 220323203213 in words is "two hundred twenty billion, three hundred twenty-three million, two hundred three thousand, two hundred thirteen".