122121193 has 4 divisors (see below), whose sum is σ = 122150980. Its totient is φ = 122091408.

The previous prime is 122121187. The next prime is 122121199. The reversal of 122121193 is 391121221.

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

It is an interprime number because it is at equal distance from previous prime (122121187) and next prime (122121199).

It can be written as a sum of positive squares in 2 ways, for example, as 58568409 + 63552784 = 7653^2 + 7972^2 .

It is a cyclic number.

It is not a de Polignac number, because 122121193 - 2²⁵ = 88566761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122121199) 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 3 ways as a sum of consecutive naturals, for example, 7530 + ... + 17347.

It is an arithmetic number, because the mean of its divisors is an integer number (30537745).

Almost surely, 2^122121193 is an apocalyptic number.

It is an amenable number.

122121193 is a deficient number, since it is larger than the sum of its proper divisors (29787).

122121193 is an equidigital number, since it uses as much as digits as its factorization.

122121193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29786.

The product of its digits is 216, while the sum is 22.

The square root of 122121193 is about 11050.8458047337. The cubic root of 122121193 is about 496.1317409876.

The spelling of 122121193 in words is "one hundred twenty-two million, one hundred twenty-one thousand, one hundred ninety-three".