221102212101 has 8 divisors (see below), whose sum is σ = 294834279264. Its totient is φ = 147385809840.

The previous prime is 221102212069. The next prime is 221102212129. The reversal of 221102212101 is 101212201122.

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

It is not a de Polignac number, because 221102212101 - 2⁵ = 221102212069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221102210101) 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, 3883251 + ... + 3939776.

It is an arithmetic number, because the mean of its divisors is an integer number (36854284908).

Almost surely, 2^221102212101 is an apocalyptic number.

It is an amenable number.

221102212101 is a deficient number, since it is larger than the sum of its proper divisors (73732067163).

221102212101 is an equidigital number, since it uses as much as digits as its factorization.

221102212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7832451.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221102212101 its reverse (101212201122), we get a palindrome (322314413223).

The spelling of 221102212101 in words is "two hundred twenty-one billion, one hundred two million, two hundred twelve thousand, one hundred one".