201101102221221 has 24 divisors (see below), whose sum is σ = 316311473556000. Its totient is φ = 122631525126432.

The previous prime is 201101102221211. The next prime is 201101102221303. The reversal of 201101102221221 is 122122201101102.

201101102221221 is a `hidden beast` number, since 2 + 0 + 110 + 110 + 2 + 221 + 221 = 666.

It is not a de Polignac number, because 201101102221221 - 2⁶ = 201101102221157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201101102221194 and 201101102221203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201101102221211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20276371551 + ... + 20276381468.

It is an arithmetic number, because the mean of its divisors is an integer number (13179644731500).

Almost surely, 2^{201101102221221} is an apocalyptic number.

It is an amenable number.

201101102221221 is a deficient number, since it is larger than the sum of its proper divisors (115210371334779).

201101102221221 is a wasteful number, since it uses less digits than its factorization.

201101102221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40552753073 (or 40552753070 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 201101102221221 its reverse (122122201101102), we get a palindrome (323223303322323).

The spelling of 201101102221221 in words is "two hundred one trillion, one hundred one billion, one hundred two million, two hundred twenty-one thousand, two hundred twenty-one".