12220219 has 4 divisors (see below), whose sum is σ = 13331160. Its totient is φ = 11109280.

The previous prime is 12220217. The next prime is 12220237. The reversal of 12220219 is 91202221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91202221 = 11 ⋅8291111.

It is a cyclic number.

It is not a de Polignac number, because 12220219 - 2¹ = 12220217 is a prime.

It is a super-2 number, since 2×12220219² = 298667504815922, 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 = 12220196 and 12220205.

It is not an unprimeable number, because it can be changed into a prime (12220217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555454 + ... + 555475.

It is an arithmetic number, because the mean of its divisors is an integer number (3332790).

Almost surely, 2^12220219 is an apocalyptic number.

12220219 is a deficient number, since it is larger than the sum of its proper divisors (1110941).

12220219 is a wasteful number, since it uses less digits than its factorization.

12220219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110940.

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

The square root of 12220219 is about 3495.7429825432. The cubic root of 12220219 is about 230.3348556642.

It can be divided in two parts, 122202 and 19, that added together give a palindrome (122221).

The spelling of 12220219 in words is "twelve million, two hundred twenty thousand, two hundred nineteen".