201102212201221 has 32 divisors (see below), whose sum is σ = 213632222238720. Its totient is φ = 188772233788800.

The previous prime is 201102212201117. The next prime is 201102212201227. The reversal of 201102212201221 is 122102212201102.

It is a cyclic number.

It is not a de Polignac number, because 201102212201221 - 2⁴⁵ = 165917840112389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201102212201227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4401329986 + ... + 4401375676.

It is an arithmetic number, because the mean of its divisors is an integer number (6676006944960).

Almost surely, 2^{201102212201221} is an apocalyptic number.

It is an amenable number.

201102212201221 is a deficient number, since it is larger than the sum of its proper divisors (12530010037499).

201102212201221 is a wasteful number, since it uses less digits than its factorization.

201102212201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48985.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 201102212201221 its reverse (122102212201102), we get a palindrome (323204424402323).

The spelling of 201102212201221 in words is "two hundred one trillion, one hundred two billion, two hundred twelve million, two hundred one thousand, two hundred twenty-one".