20010219 has 4 divisors (see below), whose sum is σ = 26680296. Its totient is φ = 13340144.

The previous prime is 20010217. The next prime is 20010223. The reversal of 20010219 is 91201002.

It is a happy number.

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 20010219 - 2¹ = 20010217 is a prime.

It is a super-2 number, since 2×20010219² = 800817728855922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20010198 and 20010207.

It is not an unprimeable number, because it can be changed into a prime (20010217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3335034 + ... + 3335039.

It is an arithmetic number, because the mean of its divisors is an integer number (6670074).

Almost surely, 2^20010219 is an apocalyptic number.

20010219 is a deficient number, since it is larger than the sum of its proper divisors (6670077).

20010219 is an equidigital number, since it uses as much as digits as its factorization.

20010219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6670076.

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

The square root of 20010219 is about 4473.2783280274. The cubic root of 20010219 is about 271.4879848438.

The spelling of 20010219 in words is "twenty million, ten thousand, two hundred nineteen".