1113434121 has 4 divisors (see below), whose sum is σ = 1484578832. Its totient is φ = 742289412.

The previous prime is 1113434093. The next prime is 1113434167. The reversal of 1113434121 is 1214343111.

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 an emirpimes, since its reverse is a distinct semiprime: 1214343111 = 3 ⋅404781037.

It is not a de Polignac number, because 1113434121 - 2¹⁵ = 1113401353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1113434321) 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, 185572351 + ... + 185572356.

It is an arithmetic number, because the mean of its divisors is an integer number (371144708).

Almost surely, 2^1113434121 is an apocalyptic number.

It is an amenable number.

1113434121 is a deficient number, since it is larger than the sum of its proper divisors (371144711).

1113434121 is an equidigital number, since it uses as much as digits as its factorization.

1113434121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371144710.

The product of its digits is 288, while the sum is 21.

The square root of 1113434121 is about 33368.1602879152. The cubic root of 1113434121 is about 1036.4654793848.

Adding to 1113434121 its reverse (1214343111), we get a palindrome (2327777232).

The spelling of 1113434121 in words is "one billion, one hundred thirteen million, four hundred thirty-four thousand, one hundred twenty-one".