2220123423 has 16 divisors (see below), whose sum is σ = 3421059840. Its totient is φ = 1254386496.

The previous prime is 2220123421. The next prime is 2220123431. The reversal of 2220123423 is 3243210222.

It is not a de Polignac number, because 2220123423 - 2¹ = 2220123421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 2220123423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220123421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 592065 + ... + 595802.

It is an arithmetic number, because the mean of its divisors is an integer number (213816240).

Almost surely, 2^2220123423 is an apocalyptic number.

2220123423 is a deficient number, since it is larger than the sum of its proper divisors (1200936417).

2220123423 is a wasteful number, since it uses less digits than its factorization.

2220123423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1187966.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 2220123423 is about 47118.1856929997. The cubic root of 2220123423 is about 1304.5449249275.

Adding to 2220123423 its reverse (3243210222), we get a palindrome (5463333645).

The spelling of 2220123423 in words is "two billion, two hundred twenty million, one hundred twenty-three thousand, four hundred twenty-three".