12421111133123 has 32 divisors (see below), whose sum is σ = 16301471232000. Its totient is φ = 9169178447520.

The previous prime is 12421111133107. The next prime is 12421111133149. The reversal of 12421111133123 is 32133111112421.

12421111133123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12421111133123 - 2⁴ = 12421111133107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12421111133092 and 12421111133101.

It is not an unprimeable number, because it can be changed into a prime (12421111193123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 125240288 + ... + 125339426.

It is an arithmetic number, because the mean of its divisors is an integer number (509420976000).

Almost surely, 2^{12421111133123} is an apocalyptic number.

12421111133123 is a deficient number, since it is larger than the sum of its proper divisors (3880360098877).

12421111133123 is a wasteful number, since it uses less digits than its factorization.

12421111133123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184815.

The product of its digits is 864, while the sum is 26.

Adding to 12421111133123 its reverse (32133111112421), we get a palindrome (44554222245544).

The spelling of 12421111133123 in words is "twelve trillion, four hundred twenty-one billion, one hundred eleven million, one hundred thirty-three thousand, one hundred twenty-three".