2211841 has 4 divisors (see below), whose sum is σ = 2308032. Its totient is φ = 2115652.

The previous prime is 2211821. The next prime is 2211883. The reversal of 2211841 is 1481122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1481122 = 2 ⋅740561.

It is a cyclic number.

It is not a de Polignac number, because 2211841 - 2⁹ = 2211329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2211821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48061 + ... + 48106.

It is an arithmetic number, because the mean of its divisors is an integer number (577008).

It is a Proth number, since it is equal to 135 ⋅ 2¹⁴ + 1 and 135 < 2¹⁴.

2^2211841 is an apocalyptic number.

It is an amenable number.

2211841 is a deficient number, since it is larger than the sum of its proper divisors (96191).

2211841 is an equidigital number, since it uses as much as digits as its factorization.

2211841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96190.

The product of its digits is 128, while the sum is 19.

The square root of 2211841 is about 1487.2259411401. The cubic root of 2211841 is about 130.2920652321.

Adding to 2211841 its reverse (1481122), we get a palindrome (3692963).

The spelling of 2211841 in words is "two million, two hundred eleven thousand, eight hundred forty-one".