22000019 has 4 divisors (see below), whose sum is σ = 22062696. Its totient is φ = 21937344.

The previous prime is 22000003. The next prime is 22000021. The reversal of 22000019 is 91000022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22000019 - 2⁴ = 22000003 is a prime.

It is a super-2 number, since 2×22000019² = 968001672000722, 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 = 21999967 and 22000012.

It is not an unprimeable number, because it can be changed into a prime (22000619) 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, 30809 + ... + 31514.

It is an arithmetic number, because the mean of its divisors is an integer number (5515674).

Almost surely, 2^22000019 is an apocalyptic number.

22000019 is a deficient number, since it is larger than the sum of its proper divisors (62677).

22000019 is an equidigital number, since it uses as much as digits as its factorization.

22000019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62676.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 22000019 is about 4690.4177852298. The cubic root of 22000019 is about 280.2040137303.

The spelling of 22000019 in words is "twenty-two million, nineteen", and thus it is an aban number and an uban number.