121236113 has 2 divisors, whose sum is σ = 121236114. Its totient is φ = 121236112.

The previous prime is 121236109. The next prime is 121236119. The reversal of 121236113 is 311632121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108326464 + 12909649 = 10408^2 + 3593^2 .

It is a cyclic number.

It is not a de Polignac number, because 121236113 - 2² = 121236109 is a prime.

It is not a weakly prime, because it can be changed into another prime (121236119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60618056 + 60618057.

It is an arithmetic number, because the mean of its divisors is an integer number (60618057).

Almost surely, 2^121236113 is an apocalyptic number.

It is an amenable number.

121236113 is a deficient number, since it is larger than the sum of its proper divisors (1).

121236113 is an equidigital number, since it uses as much as digits as its factorization.

121236113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 20.

The square root of 121236113 is about 11010.7271785291. The cubic root of 121236113 is about 494.9302530713.

Adding to 121236113 its reverse (311632121), we get a palindrome (432868234).

The spelling of 121236113 in words is "one hundred twenty-one million, two hundred thirty-six thousand, one hundred thirteen".