11212220219 has 4 divisors (see below), whose sum is σ = 11450778144. Its totient is φ = 10973662296.

The previous prime is 11212220179. The next prime is 11212220231. The reversal of 11212220219 is 91202221211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91202221211 = 252289 ⋅361499.

It is a cyclic number.

It is not a de Polignac number, because 11212220219 - 2¹² = 11212216123 is a prime.

It is a super-2 number, since 2×11212220219² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11212220194 and 11212220203.

It is not an unprimeable number, because it can be changed into a prime (11212220269) 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, 119278892 + ... + 119278985.

It is an arithmetic number, because the mean of its divisors is an integer number (2862694536).

Almost surely, 2^11212220219 is an apocalyptic number.

11212220219 is a deficient number, since it is larger than the sum of its proper divisors (238557925).

11212220219 is an equidigital number, since it uses as much as digits as its factorization.

11212220219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238557924.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 11212220219 in words is "eleven billion, two hundred twelve million, two hundred twenty thousand, two hundred nineteen".