2221340817 has 4 divisors (see below), whose sum is σ = 2961787760. Its totient is φ = 1480893876.

The previous prime is 2221340809. The next prime is 2221340831. The reversal of 2221340817 is 7180431222.

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.

It is not a de Polignac number, because 2221340817 - 2³ = 2221340809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221340857) 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, 370223467 + ... + 370223472.

It is an arithmetic number, because the mean of its divisors is an integer number (740446940).

Almost surely, 2^2221340817 is an apocalyptic number.

It is an amenable number.

2221340817 is a deficient number, since it is larger than the sum of its proper divisors (740446943).

2221340817 is an equidigital number, since it uses as much as digits as its factorization.

2221340817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740446942.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 2221340817 is about 47131.1024377746. The cubic root of 2221340817 is about 1304.7833283352.

The spelling of 2221340817 in words is "two billion, two hundred twenty-one million, three hundred forty thousand, eight hundred seventeen".