220123303123 has 4 divisors (see below), whose sum is σ = 223223631408. Its totient is φ = 217022974840.

The previous prime is 220123303111. The next prime is 220123303139. The reversal of 220123303123 is 321303321022.

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

It is a cyclic number.

It is not a de Polignac number, because 220123303123 - 2³³ = 211533368531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220123303094 and 220123303103.

It is not an unprimeable number, because it can be changed into a prime (220123309123) 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, 1550164036 + ... + 1550164177.

It is an arithmetic number, because the mean of its divisors is an integer number (55805907852).

Almost surely, 2^220123303123 is an apocalyptic number.

220123303123 is a deficient number, since it is larger than the sum of its proper divisors (3100328285).

220123303123 is an equidigital number, since it uses as much as digits as its factorization.

220123303123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3100328284.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 220123303123 its reverse (321303321022), we get a palindrome (541426624145).

The spelling of 220123303123 in words is "two hundred twenty billion, one hundred twenty-three million, three hundred three thousand, one hundred twenty-three".