2221619 has 4 divisors (see below), whose sum is σ = 2232360. Its totient is φ = 2210880.

The previous prime is 2221589. The next prime is 2221631. The reversal of 2221619 is 9161222.

2221619 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2221619 - 2¹⁶ = 2156083 is a prime.

It is a super-2 number, since 2×2221619² = 9871181962322, 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 = 2221594 and 2221603.

It is not an unprimeable number, because it can be changed into a prime (2221669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5054 + ... + 5475.

It is an arithmetic number, because the mean of its divisors is an integer number (558090).

2^2221619 is an apocalyptic number.

2221619 is a deficient number, since it is larger than the sum of its proper divisors (10741).

2221619 is a wasteful number, since it uses less digits than its factorization.

2221619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10740.

The product of its digits is 432, while the sum is 23.

The square root of 2221619 is about 1490.5096443834. The cubic root of 2221619 is about 130.4837792946.

The spelling of 2221619 in words is "two million, two hundred twenty-one thousand, six hundred nineteen".