11221619 has 4 divisors (see below), whose sum is σ = 11524944. Its totient is φ = 10918296.

The previous prime is 11221601. The next prime is 11221627. The reversal of 11221619 is 91612211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91612211 = 109 ⋅840479.

It is a cyclic number.

It is not a de Polignac number, because 11221619 - 2¹² = 11217523 is a prime.

It is a super-2 number, since 2×11221619² = 251849465962322, 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 = 11221594 and 11221603.

It is not an unprimeable number, because it can be changed into a prime (11221669) 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, 151607 + ... + 151680.

It is an arithmetic number, because the mean of its divisors is an integer number (2881236).

Almost surely, 2^11221619 is an apocalyptic number.

11221619 is a deficient number, since it is larger than the sum of its proper divisors (303325).

11221619 is an equidigital number, since it uses as much as digits as its factorization.

11221619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303324.

The product of its digits is 216, while the sum is 23.

The square root of 11221619 is about 3349.8685048819. The cubic root of 11221619 is about 223.8816538435.

The spelling of 11221619 in words is "eleven million, two hundred twenty-one thousand, six hundred nineteen".