221332010221 has 16 divisors (see below), whose sum is σ = 267843110400. Its totient is φ = 178545035520.

The previous prime is 221332010219. The next prime is 221332010227. The reversal of 221332010221 is 122010233122.

It is a cyclic number.

It is not a de Polignac number, because 221332010221 - 2¹ = 221332010219 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 (221332010227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4011580 + ... + 4066378.

It is an arithmetic number, because the mean of its divisors is an integer number (16740194400).

Almost surely, 2^221332010221 is an apocalyptic number.

It is an amenable number.

221332010221 is a deficient number, since it is larger than the sum of its proper divisors (46511100179).

221332010221 is a wasteful number, since it uses less digits than its factorization.

221332010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88764.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 221332010221 its reverse (122010233122), we get a palindrome (343342243343).

The spelling of 221332010221 in words is "two hundred twenty-one billion, three hundred thirty-two million, ten thousand, two hundred twenty-one".