4001222 has 16 divisors (see below), whose sum is σ = 6408720. Its totient is φ = 1867008.

The previous prime is 4001219. The next prime is 4001227. The reversal of 4001222 is 2221004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4229 + ... + 5087.

It is an arithmetic number, because the mean of its divisors is an integer number (400545).

Almost surely, 2^4001222 is an apocalyptic number.

4001222 is a deficient number, since it is larger than the sum of its proper divisors (2407498).

4001222 is a wasteful number, since it uses less digits than its factorization.

4001222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 4001222 is about 2000.3054766710. The cubic root of 4001222 is about 158.7562685850.

Adding to 4001222 its reverse (2221004), we get a palindrome (6222226).

The spelling of 4001222 in words is "four million, one thousand, two hundred twenty-two".