11232001123 has 4 divisors (see below), whose sum is σ = 12836572720. Its totient is φ = 9627429528.

The previous prime is 11232001103. The next prime is 11232001169. The reversal of 11232001123 is 32110023211.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11232001123 is a prime.

It is a super-2 number, since 2×11232001123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11232001097 and 11232001106.

It is not an unprimeable number, because it can be changed into a prime (11232001103) 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, 802285788 + ... + 802285801.

It is an arithmetic number, because the mean of its divisors is an integer number (3209143180).

Almost surely, 2^11232001123 is an apocalyptic number.

11232001123 is a deficient number, since it is larger than the sum of its proper divisors (1604571597).

11232001123 is an equidigital number, since it uses as much as digits as its factorization.

11232001123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1604571596.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 11232001123 its reverse (32110023211), we get a palindrome (43342024334).

The spelling of 11232001123 in words is "eleven billion, two hundred thirty-two million, one thousand, one hundred twenty-three".