212020219 has 4 divisors (see below), whose sum is σ = 212158296. Its totient is φ = 211882144.

The previous prime is 212020213. The next prime is 212020223. The reversal of 212020219 is 912020212.

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 212020219 - 2²¹ = 209923067 is a prime.

It is a super-2 number, since 2×212020219² = 89905146529615922, 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 = 212020196 and 212020205.

It is not an unprimeable number, because it can be changed into a prime (212020213) 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 3 ways as a sum of consecutive naturals, for example, 66709 + ... + 69814.

It is an arithmetic number, because the mean of its divisors is an integer number (53039574).

Almost surely, 2^212020219 is an apocalyptic number.

212020219 is a deficient number, since it is larger than the sum of its proper divisors (138077).

212020219 is a wasteful number, since it uses less digits than its factorization.

212020219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138076.

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

The square root of 212020219 is about 14560.9140853176. The cubic root of 212020219 is about 596.2921512217.

The spelling of 212020219 in words is "two hundred twelve million, twenty thousand, two hundred nineteen".