113103412421 has 4 divisors (see below), whose sum is σ = 113104237344. Its totient is φ = 113102587500.

The previous prime is 113103412403. The next prime is 113103412427. The reversal of 113103412421 is 124214301311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 124214301311 = 1217 ⋅102065983.

It is a cyclic number.

It is not a de Polignac number, because 113103412421 - 2¹⁰ = 113103411397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113103412427) 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, 151955 + ... + 499296.

It is an arithmetic number, because the mean of its divisors is an integer number (28276059336).

Almost surely, 2^113103412421 is an apocalyptic number.

It is an amenable number.

113103412421 is a deficient number, since it is larger than the sum of its proper divisors (824923).

113103412421 is an equidigital number, since it uses as much as digits as its factorization.

113103412421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824922.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 113103412421 its reverse (124214301311), we get a palindrome (237317713732).

The spelling of 113103412421 in words is "one hundred thirteen billion, one hundred three million, four hundred twelve thousand, four hundred twenty-one".