221012302332221 has 4 divisors (see below), whose sum is σ = 228141731439744. Its totient is φ = 213882873224700.

The previous prime is 221012302332197. The next prime is 221012302332247. The reversal of 221012302332221 is 122233203210122.

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 221012302332221 - 2¹⁴ = 221012302315837 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 (221012302332281) 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, 3564714553715 + ... + 3564714553776.

It is an arithmetic number, because the mean of its divisors is an integer number (57035432859936).

Almost surely, 2^{221012302332221} is an apocalyptic number.

It is an amenable number.

221012302332221 is a deficient number, since it is larger than the sum of its proper divisors (7129429107523).

221012302332221 is an equidigital number, since it uses as much as digits as its factorization.

221012302332221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7129429107522.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 221012302332221 its reverse (122233203210122), we get a palindrome (343245505542343).

The spelling of 221012302332221 in words is "two hundred twenty-one trillion, twelve billion, three hundred two million, three hundred thirty-two thousand, two hundred twenty-one".