220101212323 has 4 divisors (see below), whose sum is σ = 220121818240. Its totient is φ = 220080606408.

The previous prime is 220101212237. The next prime is 220101212371. The reversal of 220101212323 is 323212101022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220101212323 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220101212323.

It is not an unprimeable number, because it can be changed into a prime (220101212423) 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, 10286928 + ... + 10308301.

It is an arithmetic number, because the mean of its divisors is an integer number (55030454560).

Almost surely, 2^220101212323 is an apocalyptic number.

220101212323 is a deficient number, since it is larger than the sum of its proper divisors (20605917).

220101212323 is a wasteful number, since it uses less digits than its factorization.

220101212323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20605916.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 220101212323 its reverse (323212101022), we get a palindrome (543313313345).

The spelling of 220101212323 in words is "two hundred twenty billion, one hundred one million, two hundred twelve thousand, three hundred twenty-three".