122000191 has 2 divisors, whose sum is σ = 122000192. Its totient is φ = 122000190.

The previous prime is 122000189. The next prime is 122000237. The reversal of 122000191 is 191000221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122000191 - 2¹ = 122000189 is a prime.

Together with 122000189, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122000591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61000095 + 61000096.

It is an arithmetic number, because the mean of its divisors is an integer number (61000096).

Almost surely, 2^122000191 is an apocalyptic number.

122000191 is a deficient number, since it is larger than the sum of its proper divisors (1).

122000191 is an equidigital number, since it uses as much as digits as its factorization.

122000191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 122000191 is about 11045.3696633476. The cubic root of 122000191 is about 495.9678252087.

The spelling of 122000191 in words is "one hundred twenty-two million, one hundred ninety-one", and thus it is an aban number.