4241213221 has 4 divisors (see below), whose sum is σ = 4847100832. Its totient is φ = 3635325612.

The previous prime is 4241213167. The next prime is 4241213233. The reversal of 4241213221 is 1223121424.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4241213221 - 2²¹ = 4239116069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4241213192 and 4241213201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4241213521) 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 3 ways as a sum of consecutive naturals, for example, 302943795 + ... + 302943808.

It is an arithmetic number, because the mean of its divisors is an integer number (1211775208).

Almost surely, 2^4241213221 is an apocalyptic number.

It is an amenable number.

4241213221 is a deficient number, since it is larger than the sum of its proper divisors (605887611).

4241213221 is an equidigital number, since it uses as much as digits as its factorization.

4241213221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605887610.

The product of its digits is 768, while the sum is 22.

The square root of 4241213221 is about 65124.5976647841. The cubic root of 4241213221 is about 1618.6888264058.

Adding to 4241213221 its reverse (1223121424), we get a palindrome (5464334645).

The spelling of 4241213221 in words is "four billion, two hundred forty-one million, two hundred thirteen thousand, two hundred twenty-one".