11442312123 has 72 divisors (see below), whose sum is σ = 17854649904. Its totient is φ = 6508212480.

The previous prime is 11442312029. The next prime is 11442312139. The reversal of 11442312123 is 32121324411.

It is not a de Polignac number, because 11442312123 - 2²¹ = 11440214971 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11442312093 and 11442312102.

It is not an unprimeable number, because it can be changed into a prime (11442312143) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 11294965 + ... + 11295977.

Almost surely, 2^11442312123 is an apocalyptic number.

11442312123 is a deficient number, since it is larger than the sum of its proper divisors (6412337781).

11442312123 is a wasteful number, since it uses less digits than its factorization.

11442312123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133 (or 1093 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

Adding to 11442312123 its reverse (32121324411), we get a palindrome (43563636534).

The spelling of 11442312123 in words is "eleven billion, four hundred forty-two million, three hundred twelve thousand, one hundred twenty-three".