122212019 has 4 divisors (see below), whose sum is σ = 122354496. Its totient is φ = 122069544.

The previous prime is 122212007. The next prime is 122212043. The reversal of 122212019 is 910212221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 910212221 = 5651 ⋅161071.

It is a cyclic number.

It is not a de Polignac number, because 122212019 - 2⁸ = 122211763 is a prime.

It is a super-2 number, since 2×122212019² = 29871555176112722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122272019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69944 + ... + 71669.

It is an arithmetic number, because the mean of its divisors is an integer number (30588624).

Almost surely, 2^122212019 is an apocalyptic number.

122212019 is a deficient number, since it is larger than the sum of its proper divisors (142477).

122212019 is an equidigital number, since it uses as much as digits as its factorization.

122212019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142476.

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

The square root of 122212019 is about 11054.9545001325. The cubic root of 122212019 is about 496.2547076180.

The spelling of 122212019 in words is "one hundred twenty-two million, two hundred twelve thousand, nineteen".