2221735 has 4 divisors (see below), whose sum is σ = 2666088. Its totient is φ = 1777384.

The previous prime is 2221733. The next prime is 2221741. The reversal of 2221735 is 5371222.

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 2221735 - 2¹ = 2221733 is a prime.

It is a super-2 number, since 2×2221735² = 9872212820450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221733) 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, 222169 + ... + 222178.

It is an arithmetic number, because the mean of its divisors is an integer number (666522).

2^2221735 is an apocalyptic number.

2221735 is a deficient number, since it is larger than the sum of its proper divisors (444353).

2221735 is an equidigital number, since it uses as much as digits as its factorization.

2221735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444352.

The product of its digits is 840, while the sum is 22.

The square root of 2221735 is about 1490.5485567401. The cubic root of 2221735 is about 130.4860502893.

Adding to 2221735 its reverse (5371222), we get a palindrome (7592957).

The spelling of 2221735 in words is "two million, two hundred twenty-one thousand, seven hundred thirty-five".