122221019 has 2 divisors, whose sum is σ = 122221020. Its totient is φ = 122221018.

The previous prime is 122220983. The next prime is 122221039. The reversal of 122221019 is 910122221.

It is a happy number.

It is an a-pointer prime, because the next prime (122221039) can be obtained adding 122221019 to its sum of digits (20).

It is a strong prime.

It is an emirp because it is prime and its reverse (910122221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122221019 - 2¹² = 122216923 is a prime.

It is a super-3 number, since 3×122221019³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (122221039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61110509 + 61110510.

It is an arithmetic number, because the mean of its divisors is an integer number (61110510).

Almost surely, 2^122221019 is an apocalyptic number.

122221019 is a deficient number, since it is larger than the sum of its proper divisors (1).

122221019 is an equidigital number, since it uses as much as digits as its factorization.

122221019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 122221019 is about 11055.3615499449. The cubic root of 122221019 is about 496.2668891333.

The spelling of 122221019 in words is "one hundred twenty-two million, two hundred twenty-one thousand, nineteen".