22001019 has 8 divisors (see below), whose sum is σ = 29609280. Its totient is φ = 14530056.

The previous prime is 22000963. The next prime is 22001033. The reversal of 22001019 is 91010022.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22001019 - 2¹⁹ = 21476731 is a prime.

It is a super-2 number, since 2×22001019² = 968089674076722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22000989 and 22001007.

It is not an unprimeable number, because it can be changed into a prime (22005019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33949 + ... + 34590.

It is an arithmetic number, because the mean of its divisors is an integer number (3701160).

Almost surely, 2^22001019 is an apocalyptic number.

22001019 is a deficient number, since it is larger than the sum of its proper divisors (7608261).

22001019 is a wasteful number, since it uses less digits than its factorization.

22001019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68649.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 22001019 is about 4690.5243843306. The cubic root of 22001019 is about 280.2082591777.

The spelling of 22001019 in words is "twenty-two million, one thousand, nineteen".