122011999 has 2 divisors, whose sum is σ = 122012000. Its totient is φ = 122011998.

The previous prime is 122011991. The next prime is 122012021. The reversal of 122011999 is 999110221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122011999 - 2³ = 122011991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122011991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61005999 + 61006000.

It is an arithmetic number, because the mean of its divisors is an integer number (61006000).

Almost surely, 2^122011999 is an apocalyptic number.

122011999 is a deficient number, since it is larger than the sum of its proper divisors (1).

122011999 is an equidigital number, since it uses as much as digits as its factorization.

122011999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 34.

The square root of 122011999 is about 11045.9041730408. The cubic root of 122011999 is about 495.9838257278.

The spelling of 122011999 in words is "one hundred twenty-two million, eleven thousand, nine hundred ninety-nine".