12019211 has 4 divisors (see below), whose sum is σ = 12054000. Its totient is φ = 11984424.

The previous prime is 12019201. The next prime is 12019219. The reversal of 12019211 is 11291021.

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 12019211 - 2¹⁰ = 12018187 is a prime.

It is a super-2 number, since 2×12019211² = 288922866125042, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12019211.

It is not an unprimeable number, because it can be changed into a prime (12019219) 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, 16871 + ... + 17568.

It is an arithmetic number, because the mean of its divisors is an integer number (3013500).

Almost surely, 2^12019211 is an apocalyptic number.

12019211 is a deficient number, since it is larger than the sum of its proper divisors (34789).

12019211 is an equidigital number, since it uses as much as digits as its factorization.

12019211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34788.

The product of its (nonzero) digits is 36, while the sum is 17.

The square root of 12019211 is about 3466.8733752475. The cubic root of 12019211 is about 229.0649561797.

The spelling of 12019211 in words is "twelve million, nineteen thousand, two hundred eleven".