12011122010123 has 4 divisors (see below), whose sum is σ = 12011130714960. Its totient is φ = 12011113305288.

The previous prime is 12011122010117. The next prime is 12011122010183. The reversal of 12011122010123 is 32101022111021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12011122010123 - 2⁸ = 12011122009867 is a prime.

It is a super-2 number, since 2×12011122010123² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12011122010113) 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, 1773215 + ... + 5212152.

It is an arithmetic number, because the mean of its divisors is an integer number (3002782678740).

Almost surely, 2^{12011122010123} is an apocalyptic number.

12011122010123 is a deficient number, since it is larger than the sum of its proper divisors (8704837).

12011122010123 is an equidigital number, since it uses as much as digits as its factorization.

12011122010123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8704836.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 12011122010123 its reverse (32101022111021), we get a palindrome (44112144121144).

The spelling of 12011122010123 in words is "twelve trillion, eleven billion, one hundred twenty-two million, ten thousand, one hundred twenty-three".