221232301 has 4 divisors (see below), whose sum is σ = 221313600. Its totient is φ = 221151004.

The previous prime is 221232283. The next prime is 221232343. The reversal of 221232301 is 103232122.

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 221232301 - 2⁷ = 221232173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221232001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36421 + ... + 42058.

It is an arithmetic number, because the mean of its divisors is an integer number (55328400).

Almost surely, 2^221232301 is an apocalyptic number.

It is an amenable number.

221232301 is a deficient number, since it is larger than the sum of its proper divisors (81299).

221232301 is an equidigital number, since it uses as much as digits as its factorization.

221232301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81298.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 221232301 is about 14873.8798233682. The cubic root of 221232301 is about 604.8061223360.

Adding to 221232301 its reverse (103232122), we get a palindrome (324464423).

The spelling of 221232301 in words is "two hundred twenty-one million, two hundred thirty-two thousand, three hundred one".