11421444123 has 40 divisors (see below), whose sum is σ = 17564727840. Its totient is φ = 7390776960.

The previous prime is 11421444113. The next prime is 11421444193. The reversal of 11421444123 is 32144412411.

11421444123 is a `hidden beast` number, since 1 + 1 + 4 + 214 + 441 + 2 + 3 = 666.

It is not a de Polignac number, because 11421444123 - 2⁸ = 11421443867 is a prime.

It is a super-2 number, since 2×11421444123² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (11421444113) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1311343 + ... + 1320023.

It is an arithmetic number, because the mean of its divisors is an integer number (439118196).

Almost surely, 2^11421444123 is an apocalyptic number.

11421444123 is a deficient number, since it is larger than the sum of its proper divisors (6143283717).

11421444123 is an equidigital number, since it uses as much as digits as its factorization.

11421444123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9169 (or 9160 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

Adding to 11421444123 its reverse (32144412411), we get a palindrome (43565856534).

The spelling of 11421444123 in words is "eleven billion, four hundred twenty-one million, four hundred forty-four thousand, one hundred twenty-three".