4221013421 has 8 divisors (see below), whose sum is σ = 4233522240. Its totient is φ = 4208518912.

The previous prime is 4221013393. The next prime is 4221013441. The reversal of 4221013421 is 1243101224.

4221013421 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 4221013421 - 2³⁰ = 3147271597 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4221013393 and 4221013402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221013441) 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, 900941 + ... + 905613.

It is an arithmetic number, because the mean of its divisors is an integer number (529190280).

Almost surely, 2^4221013421 is an apocalyptic number.

It is an amenable number.

4221013421 is a deficient number, since it is larger than the sum of its proper divisors (12508819).

4221013421 is a wasteful number, since it uses less digits than its factorization.

4221013421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7155.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 4221013421 is about 64969.3267704076. The cubic root of 4221013421 is about 1616.1149372807.

Adding to 4221013421 its reverse (1243101224), we get a palindrome (5464114645).

The spelling of 4221013421 in words is "four billion, two hundred twenty-one million, thirteen thousand, four hundred twenty-one".