121352113 has 4 divisors (see below), whose sum is σ = 121557348. Its totient is φ = 121146880.

The previous prime is 121352111. The next prime is 121352129. The reversal of 121352113 is 311253121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27804529 + 93547584 = 5273^2 + 9672^2 .

It is a cyclic number.

It is not a de Polignac number, because 121352113 - 2¹ = 121352111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121352111) 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, 101728 + ... + 102913.

It is an arithmetic number, because the mean of its divisors is an integer number (30389337).

Almost surely, 2^121352113 is an apocalyptic number.

It is an amenable number.

121352113 is a deficient number, since it is larger than the sum of its proper divisors (205235).

121352113 is an equidigital number, since it uses as much as digits as its factorization.

121352113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205234.

The product of its digits is 180, while the sum is 19.

The square root of 121352113 is about 11015.9935094389. The cubic root of 121352113 is about 495.0880542602.

The spelling of 121352113 in words is "one hundred twenty-one million, three hundred fifty-two thousand, one hundred thirteen".