122201997 has 4 divisors (see below), whose sum is σ = 162936000. Its totient is φ = 81467996.

The previous prime is 122201951. The next prime is 122201999. The reversal of 122201997 is 799102221.

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.

It is a cyclic number.

It is not a de Polignac number, because 122201997 - 2⁷ = 122201869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122201999) 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, 20366997 + ... + 20367002.

It is an arithmetic number, because the mean of its divisors is an integer number (40734000).

Almost surely, 2^122201997 is an apocalyptic number.

It is an amenable number.

122201997 is a deficient number, since it is larger than the sum of its proper divisors (40734003).

122201997 is an equidigital number, since it uses as much as digits as its factorization.

122201997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40734002.

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 122201997 is about 11054.5012099144. The cubic root of 122201997 is about 496.2411421201.

The spelling of 122201997 in words is "one hundred twenty-two million, two hundred one thousand, nine hundred ninety-seven".