4221221224 has 16 divisors (see below), whose sum is σ = 8634316320. Its totient is φ = 1918736880.

The previous prime is 4221221197. The next prime is 4221221287.

4221221224 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (22).

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

It is a junction number, because it is equal to n+sod(n) for n = 4221221195 and 4221221204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23984124 + ... + 23984299.

It is an arithmetic number, because the mean of its divisors is an integer number (539644770).

Almost surely, 2^4221221224 is an apocalyptic number.

4221221224 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

4221221224 is an abundant number, since it is smaller than the sum of its proper divisors (4413095096).

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

4221221224 is a wasteful number, since it uses less digits than its factorization.

4221221224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47968440 (or 47968436 counting only the distinct ones).

The product of its digits is 1024, while the sum is 22.

The square root of 4221221224 is about 64970.9259900149. The cubic root of 4221221224 is about 1616.1414576118.

It can be divided in two parts, 42212 and 21224, that added together give a palindrome (63436).

The spelling of 4221221224 in words is "four billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred twenty-four".