4221421611 has 16 divisors (see below), whose sum is σ = 6141336960. Its totient is φ = 2557984320.

The previous prime is 4221421601. The next prime is 4221421639. The reversal of 4221421611 is 1161241224.

It is not a de Polignac number, because 4221421611 - 2⁵ = 4221421579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4221421601) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 348096 + ... + 360018.

It is an arithmetic number, because the mean of its divisors is an integer number (383833560).

Almost surely, 2^4221421611 is an apocalyptic number.

4221421611 is a deficient number, since it is larger than the sum of its proper divisors (1919915349).

4221421611 is a wasteful number, since it uses less digits than its factorization.

4221421611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22666.

The product of its digits is 768, while the sum is 24.

The square root of 4221421611 is about 64972.4680999575. The cubic root of 4221421611 is about 1616.1670306705.

Adding to 4221421611 its reverse (1161241224), we get a palindrome (5382662835).

The spelling of 4221421611 in words is "four billion, two hundred twenty-one million, four hundred twenty-one thousand, six hundred eleven".