4221230421 has 8 divisors (see below), whose sum is σ = 5734501920. Its totient is φ = 2761056272.

The previous prime is 4221230417. The next prime is 4221230449. The reversal of 4221230421 is 1240321224.

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 4221230421 - 2² = 4221230417 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221234421) 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, 13274151 + ... + 13274468.

It is an arithmetic number, because the mean of its divisors is an integer number (716812740).

Almost surely, 2^4221230421 is an apocalyptic number.

It is an amenable number.

4221230421 is a deficient number, since it is larger than the sum of its proper divisors (1513271499).

4221230421 is a wasteful number, since it uses less digits than its factorization.

4221230421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26548675.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 4221230421 is about 64970.9967677886. The cubic root of 4221230421 is about 1616.1426313355.

Adding to 4221230421 its reverse (1240321224), we get a palindrome (5461551645).

The spelling of 4221230421 in words is "four billion, two hundred twenty-one million, two hundred thirty thousand, four hundred twenty-one".