221221232301 has 8 divisors (see below), whose sum is σ = 294965434080. Its totient is φ = 147478926032.

The previous prime is 221221232291. The next prime is 221221232417. The reversal of 221221232301 is 103232122122.

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 221221232301 - 2⁹ = 221221231789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221221233301) 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, 174546 + ... + 687683.

It is an arithmetic number, because the mean of its divisors is an integer number (36870679260).

Almost surely, 2^221221232301 is an apocalyptic number.

It is an amenable number.

221221232301 is a deficient number, since it is larger than the sum of its proper divisors (73744201779).

221221232301 is an equidigital number, since it uses as much as digits as its factorization.

221221232301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947755.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 221221232301 its reverse (103232122122), we get a palindrome (324453354423).

The spelling of 221221232301 in words is "two hundred twenty-one billion, two hundred twenty-one million, two hundred thirty-two thousand, three hundred one".