11202312123 has 32 divisors (see below), whose sum is σ = 17006457600. Its totient is φ = 7285449600.

The previous prime is 11202312073. The next prime is 11202312133. The reversal of 11202312123 is 32121320211.

It is not a de Polignac number, because 11202312123 - 2¹² = 11202308027 is a prime.

It is a super-2 number, since 2×11202312123² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11202312096 and 11202312105.

It is not an unprimeable number, because it can be changed into a prime (11202312133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 181843 + ... + 235523.

It is an arithmetic number, because the mean of its divisors is an integer number (531451800).

Almost surely, 2^11202312123 is an apocalyptic number.

11202312123 is a deficient number, since it is larger than the sum of its proper divisors (5804145477).

11202312123 is a wasteful number, since it uses less digits than its factorization.

11202312123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53880 (or 53874 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 11202312123 its reverse (32121320211), we get a palindrome (43323632334).

The spelling of 11202312123 in words is "eleven billion, two hundred two million, three hundred twelve thousand, one hundred twenty-three".