4221120 has 56 divisors (see below), whose sum is σ = 13405104. Its totient is φ = 1125376.

The previous prime is 4221109. The next prime is 4221169. The reversal of 4221120 is 211224.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 4221096 and 4221105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1239 + ... + 3158.

Almost surely, 2^4221120 is an apocalyptic number.

4221120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4221120 is an abundant number, since it is smaller than the sum of its proper divisors (9183984).

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

4221120 is a wasteful number, since it uses less digits than its factorization.

4221120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4417 (or 4407 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 4221120 is about 2054.5364440671. The cubic root of 4221120 is about 161.6128539264.

Adding to 4221120 its reverse (211224), we get a palindrome (4432344).

The spelling of 4221120 in words is "four million, two hundred twenty-one thousand, one hundred twenty".