22122019 has 4 divisors (see below), whose sum is σ = 22132440. Its totient is φ = 22111600.

The previous prime is 22122017. The next prime is 22122043. The reversal of 22122019 is 91022122.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22122019 - 2¹ = 22122017 is a prime.

It is a super-2 number, since 2×22122019² = 978767449272722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22121987 and 22122005.

It is not an unprimeable number, because it can be changed into a prime (22122011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 757 + ... + 6694.

It is an arithmetic number, because the mean of its divisors is an integer number (5533110).

Almost surely, 2^22122019 is an apocalyptic number.

22122019 is a deficient number, since it is larger than the sum of its proper divisors (10421).

22122019 is an equidigital number, since it uses as much as digits as its factorization.

22122019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10420.

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

The square root of 22122019 is about 4703.4050431576. The cubic root of 22122019 is about 280.7210116692.

The spelling of 22122019 in words is "twenty-two million, one hundred twenty-two thousand, nineteen".