122220019 has 2 divisors, whose sum is σ = 122220020. Its totient is φ = 122220018.

The previous prime is 122219983. The next prime is 122220037. The reversal of 122220019 is 910022221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122220019 - 2⁹ = 122219507 is a prime.

It is a super-2 number, since 2×122220019² = 29875466088720722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122219978 and 122220005.

It is not a weakly prime, because it can be changed into another prime (122221019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61110009 + 61110010.

It is an arithmetic number, because the mean of its divisors is an integer number (61110010).

Almost surely, 2^122220019 is an apocalyptic number.

122220019 is a deficient number, since it is larger than the sum of its proper divisors (1).

122220019 is an equidigital number, since it uses as much as digits as its factorization.

122220019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 122220019 is about 11055.3163229281. The cubic root of 122220019 is about 496.2655356611.

The spelling of 122220019 in words is "one hundred twenty-two million, two hundred twenty thousand, nineteen".