122121199 has 2 divisors, whose sum is σ = 122121200. Its totient is φ = 122121198.

The previous prime is 122121187. The next prime is 122121203. The reversal of 122121199 is 991121221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122121199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122121119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61060599 + 61060600.

It is an arithmetic number, because the mean of its divisors is an integer number (61060600).

Almost surely, 2^122121199 is an apocalyptic number.

122121199 is a deficient number, since it is larger than the sum of its proper divisors (1).

122121199 is an equidigital number, since it uses as much as digits as its factorization.

122121199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 28.

The square root of 122121199 is about 11050.8460762061. The cubic root of 122121199 is about 496.1317491129.

The spelling of 122121199 in words is "one hundred twenty-two million, one hundred twenty-one thousand, one hundred ninety-nine".