121311113 has 12 divisors (see below), whose sum is σ = 153946512. Its totient is φ = 94527720.

The previous prime is 121311103. The next prime is 121311121. The reversal of 121311113 is 311113121.

It is a happy number.

It is not a de Polignac number, because 121311113 - 2¹⁰ = 121310089 is a prime.

It is a super-2 number, since 2×121311113² = 29432772274597538, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121311103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111995 + ... + 113072.

It is an arithmetic number, because the mean of its divisors is an integer number (12828876).

Almost surely, 2^121311113 is an apocalyptic number.

It is an amenable number.

121311113 is a deficient number, since it is larger than the sum of its proper divisors (32635399).

121311113 is a wasteful number, since it uses less digits than its factorization.

121311113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225092 (or 225085 counting only the distinct ones).

The product of its digits is 18, while the sum is 14.

The square root of 121311113 is about 11014.1324215755. The cubic root of 121311113 is about 495.0322911969.

Adding to 121311113 its reverse (311113121), we get a palindrome (432424234).

It can be divided in two parts, 121 and 311113, that multiplied together give a palindrome (37644673).

The spelling of 121311113 in words is "one hundred twenty-one million, three hundred eleven thousand, one hundred thirteen".