122222197 has 4 divisors (see below), whose sum is σ = 129411756. Its totient is φ = 115032640.

The previous prime is 122222183. The next prime is 122222201. The reversal of 122222197 is 791222221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 791222221 = 193 ⋅4099597.

It can be written as a sum of positive squares in 2 ways, for example, as 47416996 + 74805201 = 6886^2 + 8649^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122222197 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122222797) 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, 3594754 + ... + 3594787.

It is an arithmetic number, because the mean of its divisors is an integer number (32352939).

Almost surely, 2^122222197 is an apocalyptic number.

122222197 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

122222197 is a deficient number, since it is larger than the sum of its proper divisors (7189559).

122222197 is an equidigital number, since it uses as much as digits as its factorization.

122222197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7189558.

The product of its digits is 2016, while the sum is 28.

The square root of 122222197 is about 11055.4148271334. The cubic root of 122222197 is about 496.2684835140.

The spelling of 122222197 in words is "one hundred twenty-two million, two hundred twenty-two thousand, one hundred ninety-seven".