4221446621 has 8 divisors (see below), whose sum is σ = 4832650944. Its totient is φ = 3612277440.

The previous prime is 4221446617. The next prime is 4221446653. The reversal of 4221446621 is 1266441224.

4221446621 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4221446621 - 2² = 4221446617 is a prime.

It is a super-2 number, since 2×4221446621² = 35641223147904635282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221446521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504335 + ... + 512636.

It is an arithmetic number, because the mean of its divisors is an integer number (604081368).

Almost surely, 2^4221446621 is an apocalyptic number.

It is an amenable number.

4221446621 is a deficient number, since it is larger than the sum of its proper divisors (611204323).

4221446621 is a wasteful number, since it uses less digits than its factorization.

4221446621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017571.

The product of its digits is 18432, while the sum is 32.

The square root of 4221446621 is about 64972.6605658103. The cubic root of 4221446621 is about 1616.1702223486.

Adding to 4221446621 its reverse (1266441224), we get a palindrome (5487887845).

The spelling of 4221446621 in words is "four billion, two hundred twenty-one million, four hundred forty-six thousand, six hundred twenty-one".