4221001224 has 48 divisors (see below), whose sum is σ = 12471142320. Its totient is φ = 1279091040.

The previous prime is 4221001207. The next prime is 4221001229.

4221001224 is nontrivially palindromic in base 10.

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

It is a junction number, because it is equal to n+sod(n) for n = 4221001197 and 4221001206.

It is not an unprimeable number, because it can be changed into a prime (4221001229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2663982 + ... + 2665565.

It is an arithmetic number, because the mean of its divisors is an integer number (259815465).

Almost surely, 2^4221001224 is an apocalyptic number.

4221001224 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

4221001224 is an abundant number, since it is smaller than the sum of its proper divisors (8250141096).

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

4221001224 is a wasteful number, since it uses less digits than its factorization.

4221001224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5329570 (or 5329563 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 4221001224 is about 64969.2329029672. The cubic root of 4221001224 is about 1616.1133806424.

It can be divided in two parts, 422100 and 1224, that added together give a palindrome (423324).

The spelling of 4221001224 in words is "four billion, two hundred twenty-one million, one thousand, two hundred twenty-four".