121300197 has 4 divisors (see below), whose sum is σ = 161733600. Its totient is φ = 80866796.

The previous prime is 121300159. The next prime is 121300261. The reversal of 121300197 is 791003121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 791003121 = 3 ⋅263667707.

It is a cyclic number.

It is not a de Polignac number, because 121300197 - 2¹⁸ = 121038053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121300297) 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, 20216697 + ... + 20216702.

It is an arithmetic number, because the mean of its divisors is an integer number (40433400).

Almost surely, 2^121300197 is an apocalyptic number.

It is an amenable number.

121300197 is a deficient number, since it is larger than the sum of its proper divisors (40433403).

121300197 is an equidigital number, since it uses as much as digits as its factorization.

121300197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40433402.

The product of its (nonzero) digits is 378, while the sum is 24.

The square root of 121300197 is about 11013.6368652684. The cubic root of 121300197 is about 495.0174425034.

The spelling of 121300197 in words is "one hundred twenty-one million, three hundred thousand, one hundred ninety-seven".