113223121 has 16 divisors (see below), whose sum is σ = 125572608. Its totient is φ = 101232000.

The previous prime is 113223119. The next prime is 113223133. The reversal of 113223121 is 121322311.

It is a cyclic number.

It is not a de Polignac number, because 113223121 - 2¹ = 113223119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113223095 and 113223104.

It is not an unprimeable number, because it can be changed into a prime (113223151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247525 + ... + 247981.

It is an arithmetic number, because the mean of its divisors is an integer number (7848288).

Almost surely, 2^113223121 is an apocalyptic number.

113223121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

113223121 is a deficient number, since it is larger than the sum of its proper divisors (12349487).

113223121 is a wasteful number, since it uses less digits than its factorization.

113223121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792.

The product of its digits is 72, while the sum is 16.

The square root of 113223121 is about 10640.6353663679. The cubic root of 113223121 is about 483.7768035502.

Adding to 113223121 its reverse (121322311), we get a palindrome (234545432).

The spelling of 113223121 in words is "one hundred thirteen million, two hundred twenty-three thousand, one hundred twenty-one".