4221142220 has 48 divisors (see below), whose sum is σ = 9449126400. Its totient is φ = 1579331520.

The previous prime is 4221142147. The next prime is 4221142223. The reversal of 4221142220 is 222411224.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 4221142192 and 4221142201.

It is not an unprimeable number, because it can be changed into a prime (4221142223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40286 + ... + 100325.

It is an arithmetic number, because the mean of its divisors is an integer number (196856800).

Almost surely, 2^4221142220 is an apocalyptic number.

It is an amenable number.

4221142220 is an abundant number, since it is smaller than the sum of its proper divisors (5227984180).

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

4221142220 is a wasteful number, since it uses less digits than its factorization.

4221142220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140718 (or 140716 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 4221142220 is about 64970.3179921416. The cubic root of 4221142220 is about 1616.1313750291.

Adding to 4221142220 its reverse (222411224), we get a palindrome (4443553444).

The spelling of 4221142220 in words is "four billion, two hundred twenty-one million, one hundred forty-two thousand, two hundred twenty".