122197 has 4 divisors (see below), whose sum is σ = 123660. Its totient is φ = 120736.

The previous prime is 122173. The next prime is 122201. The reversal of 122197 is 791221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 791221 = 397 ⋅1993.

It can be written as a sum of positive squares in 2 ways, for example, as 81796 + 40401 = 286^2 + 201^2 .

It is a cyclic number.

It is not a de Polignac number, because 122197 - 2⁷ = 122069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 598 + ... + 775.

It is an arithmetic number, because the mean of its divisors is an integer number (30915).

2¹²²¹⁹⁷ is an apocalyptic number.

It is an amenable number.

122197 is a deficient number, since it is larger than the sum of its proper divisors (1463).

122197 is an equidigital number, since it uses as much as digits as its factorization.

122197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1462.

The product of its digits is 252, while the sum is 22.

The square root of 122197 is about 349.5668748609. The cubic root of 122197 is about 49.6234378044.

It can be divided in two parts, 12 and 2197, that added together give a square (2209 = 47²).

The spelling of 122197 in words is "one hundred twenty-two thousand, one hundred ninety-seven".