121236193 has 4 divisors (see below), whose sum is σ = 130562068. Its totient is φ = 111910320.

The previous prime is 121236187. The next prime is 121236223. The reversal of 121236193 is 391632121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 391632121 = 1549 ⋅252829.

It can be written as a sum of positive squares in 2 ways, for example, as 45319824 + 75916369 = 6732^2 + 8713^2 .

It is a cyclic number.

It is not a de Polignac number, because 121236193 - 2¹⁷ = 121105121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121236113) 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, 4662918 + ... + 4662943.

It is an arithmetic number, because the mean of its divisors is an integer number (32640517).

Almost surely, 2^121236193 is an apocalyptic number.

121236193 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

121236193 is a deficient number, since it is larger than the sum of its proper divisors (9325875).

121236193 is an equidigital number, since it uses as much as digits as its factorization.

121236193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9325874.

The product of its digits is 1944, while the sum is 28.

The square root of 121236193 is about 11010.7308113494. The cubic root of 121236193 is about 494.9303619343.

The spelling of 121236193 in words is "one hundred twenty-one million, two hundred thirty-six thousand, one hundred ninety-three".