201211219 has 4 divisors (see below), whose sum is σ = 219503160. Its totient is φ = 182919280.

The previous prime is 201211189. The next prime is 201211229. The reversal of 201211219 is 912112102.

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 201211219 - 2⁵ = 201211187 is a prime.

It is a super-2 number, since 2×201211219² = 80971909302931922, 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 = 201211196 and 201211205.

It is not an unprimeable number, because it can be changed into a prime (201211229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9145954 + ... + 9145975.

It is an arithmetic number, because the mean of its divisors is an integer number (54875790).

Almost surely, 2^201211219 is an apocalyptic number.

201211219 is a deficient number, since it is larger than the sum of its proper divisors (18291941).

201211219 is a wasteful number, since it uses less digits than its factorization.

201211219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18291940.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 201211219 is about 14184.8940426074. The cubic root of 201211219 is about 585.9817144174.

It can be divided in two parts, 2012 and 11219, that added together give a palindrome (13231).

The spelling of 201211219 in words is "two hundred one million, two hundred eleven thousand, two hundred nineteen".