4222081 has 4 divisors (see below), whose sum is σ = 4367700. Its totient is φ = 4076464.

The previous prime is 4222067. The next prime is 4222091. The reversal of 4222081 is 1802224.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 982081 + 3240000 = 991^2 + 1800^2 .

It is a cyclic number.

It is not a de Polignac number, because 4222081 - 2⁷ = 4221953 is a prime.

It is a super-2 number, since 2×4222081² = 35651935941122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4222051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72766 + ... + 72823.

It is an arithmetic number, because the mean of its divisors is an integer number (1091925).

Almost surely, 2^4222081 is an apocalyptic number.

It is an amenable number.

4222081 is a deficient number, since it is larger than the sum of its proper divisors (145619).

4222081 is a wasteful number, since it uses less digits than its factorization.

4222081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145618.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 4222081 is about 2054.7703034646. The cubic root of 4222081 is about 161.6251175095.

The spelling of 4222081 in words is "four million, two hundred twenty-two thousand, eighty-one".