221102220022221 has 8 divisors (see below), whose sum is σ = 294803088200224. Its totient is φ = 147401415929520.

The previous prime is 221102220022219. The next prime is 221102220022253. The reversal of 221102220022221 is 122220022201122.

221102220022221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221102220022221 - 2¹ = 221102220022219 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 (221102220022261) 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, 7291495 + ... + 22256916.

It is an arithmetic number, because the mean of its divisors is an integer number (36850386025028).

Almost surely, 2^{221102220022221} is an apocalyptic number.

It is an amenable number.

221102220022221 is a deficient number, since it is larger than the sum of its proper divisors (73700868178003).

221102220022221 is a wasteful number, since it uses less digits than its factorization.

221102220022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32042651.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 221102220022221 its reverse (122220022201122), we get a palindrome (343322242223343).

The spelling of 221102220022221 in words is "two hundred twenty-one trillion, one hundred two billion, two hundred twenty million, twenty-two thousand, two hundred twenty-one".