122012197 has 2 divisors, whose sum is σ = 122012198. Its totient is φ = 122012196.

The previous prime is 122012173. The next prime is 122012257. The reversal of 122012197 is 791210221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66569281 + 55442916 = 8159^2 + 7446^2 .

It is an emirp because it is prime and its reverse (791210221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122012197 - 2²³ = 113623589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122012117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61006098 + 61006099.

It is an arithmetic number, because the mean of its divisors is an integer number (61006099).

Almost surely, 2^122012197 is an apocalyptic number.

It is an amenable number.

122012197 is a deficient number, since it is larger than the sum of its proper divisors (1).

122012197 is an equidigital number, since it uses as much as digits as its factorization.

122012197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 122012197 is about 11045.9131356353. The cubic root of 122012197 is about 495.9840940204.

The spelling of 122012197 in words is "one hundred twenty-two million, twelve thousand, one hundred ninety-seven".