122197000 has 64 divisors (see below), whose sum is σ = 289364400. Its totient is φ = 48294400.

The previous prime is 122196989. The next prime is 122197001. The reversal of 122197000 is 791221.

It can be written as a sum of positive squares in 8 ways, for example, as 14577124 + 107619876 = 3818^2 + 10374^2 .

It is not an unprimeable number, because it can be changed into a prime (122197001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88314 + ... + 89686.

Almost surely, 2^122197000 is an apocalyptic number.

122197000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122197000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144682200).

122197000 is an abundant number, since it is smaller than the sum of its proper divisors (167167400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122197000 is a wasteful number, since it uses less digits than its factorization.

122197000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1483 (or 1469 counting only the distinct ones).

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

The square root of 122197000 is about 11054.2751910743. The cubic root of 122197000 is about 496.2343780441.

The spelling of 122197000 in words is "one hundred twenty-two million, one hundred ninety-seven thousand".