12401121023 has 4 divisors (see below), whose sum is σ = 12405138720. Its totient is φ = 12397103328.

The previous prime is 12401120987. The next prime is 12401121049. The reversal of 12401121023 is 32012110421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32012110421 = 41 ⋅780783181.

It is a cyclic number.

It is not a de Polignac number, because 12401121023 - 2⁶ = 12401120959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12401120992 and 12401121010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12401120023) 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, 2004215 + ... + 2010392.

It is an arithmetic number, because the mean of its divisors is an integer number (3101284680).

Almost surely, 2^12401121023 is an apocalyptic number.

12401121023 is a deficient number, since it is larger than the sum of its proper divisors (4017697).

12401121023 is an equidigital number, since it uses as much as digits as its factorization.

12401121023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4017696.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12401121023 its reverse (32012110421), we get a palindrome (44413231444).

The spelling of 12401121023 in words is "twelve billion, four hundred one million, one hundred twenty-one thousand, twenty-three".