12122019 has 72 divisors (see below), whose sum is σ = 23298912. Its totient is φ = 5909760.

The previous prime is 12122009. The next prime is 12122021. The reversal of 12122019 is 91022121.

It is not a de Polignac number, because 12122019 - 2⁵ = 12121987 is a prime.

It is a super-2 number, since 2×12122019² = 293886689272722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12121992 and 12122010.

It is not an unprimeable number, because it can be changed into a prime (12122009) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 295639 + ... + 295679.

It is an arithmetic number, because the mean of its divisors is an integer number (323596).

Almost surely, 2^12122019 is an apocalyptic number.

12122019 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12122019 is a deficient number, since it is larger than the sum of its proper divisors (11176893).

12122019 is a wasteful number, since it uses less digits than its factorization.

12122019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 12122019 is about 3481.6689963292. The cubic root of 12122019 is about 229.7162158461.

It can be divided in two parts, 1212201 and 9, that multiplied together give a square (10909809 = 3303²).

The spelling of 12122019 in words is "twelve million, one hundred twenty-two thousand, nineteen".