221320230032221 has 8 divisors (see below), whose sum is σ = 221781334717760. Its totient is φ = 220859591818752.

The previous prime is 221320230032197. The next prime is 221320230032243. The reversal of 221320230032221 is 122230032023122.

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 221320230032221 - 2³¹ = 221318082548573 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 (221320230032021) 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, 115668111 + ... + 117565948.

It is an arithmetic number, because the mean of its divisors is an integer number (27722666839720).

Almost surely, 2^{221320230032221} is an apocalyptic number.

It is an amenable number.

221320230032221 is a deficient number, since it is larger than the sum of its proper divisors (461104685539).

221320230032221 is a wasteful number, since it uses less digits than its factorization.

221320230032221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233236035.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 221320230032221 its reverse (122230032023122), we get a palindrome (343550262055343).

The spelling of 221320230032221 in words is "two hundred twenty-one trillion, three hundred twenty billion, two hundred thirty million, thirty-two thousand, two hundred twenty-one".