121223113 has 16 divisors (see below), whose sum is σ = 136991232. Its totient is φ = 106272000.

The previous prime is 121223083. The next prime is 121223117. The reversal of 121223113 is 311322121.

It is a cyclic number.

It is not a de Polignac number, because 121223113 - 2⁹ = 121222601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121223117) 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, 147243 + ... + 148063.

It is an arithmetic number, because the mean of its divisors is an integer number (8561952).

Almost surely, 2^121223113 is an apocalyptic number.

It is an amenable number.

121223113 is a deficient number, since it is larger than the sum of its proper divisors (15768119).

121223113 is a wasteful number, since it uses less digits than its factorization.

121223113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296.

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

The square root of 121223113 is about 11010.1368293042. The cubic root of 121223113 is about 494.9125621838.

Adding to 121223113 its reverse (311322121), we get a palindrome (432545234).

The spelling of 121223113 in words is "one hundred twenty-one million, two hundred twenty-three thousand, one hundred thirteen".