4221612 has 24 divisors (see below), whose sum is σ = 10945200. Its totient is φ = 1407168.

The previous prime is 4221583. The next prime is 4221619. The reversal of 4221612 is 2161224.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (4221619) 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, 19437 + ... + 19652.

It is an arithmetic number, because the mean of its divisors is an integer number (456050).

Almost surely, 2^4221612 is an apocalyptic number.

It is an amenable number.

4221612 is an abundant number, since it is smaller than the sum of its proper divisors (6723588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4221612 is a wasteful number, since it uses less digits than its factorization.

4221612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39102 (or 39094 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 4221612 is about 2054.6561756167. The cubic root of 4221612 is about 161.6191327051.

Adding to 4221612 its reverse (2161224), we get a palindrome (6382836).

The spelling of 4221612 in words is "four million, two hundred twenty-one thousand, six hundred twelve".