11420123223 has 32 divisors (see below), whose sum is σ = 16844396800. Its totient is φ = 6854512896.

The previous prime is 11420123191. The next prime is 11420123243. The reversal of 11420123223 is 32232102411.

It is not a de Polignac number, because 11420123223 - 2⁵ = 11420123191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11420123223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11420123243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27723 + ... + 153651.

It is an arithmetic number, because the mean of its divisors is an integer number (526387400).

Almost surely, 2^11420123223 is an apocalyptic number.

11420123223 is a deficient number, since it is larger than the sum of its proper divisors (5424273577).

11420123223 is a wasteful number, since it uses less digits than its factorization.

11420123223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126031.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 11420123223 its reverse (32232102411), we get a palindrome (43652225634).

The spelling of 11420123223 in words is "eleven billion, four hundred twenty million, one hundred twenty-three thousand, two hundred twenty-three".