201110122110221 has 4 divisors (see below), whose sum is σ = 211694865379200. Its totient is φ = 190525378841244.

The previous prime is 201110122110217. The next prime is 201110122110229. The reversal of 201110122110221 is 122011221011102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201110122110221 - 2² = 201110122110217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201110122110221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201110122110229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5292371634461 + ... + 5292371634498.

It is an arithmetic number, because the mean of its divisors is an integer number (52923716344800).

Almost surely, 2^{201110122110221} is an apocalyptic number.

It is an amenable number.

201110122110221 is a deficient number, since it is larger than the sum of its proper divisors (10584743268979).

201110122110221 is a wasteful number, since it uses less digits than its factorization.

201110122110221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10584743268978.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 201110122110221 its reverse (122011221011102), we get a palindrome (323121343121323).

The spelling of 201110122110221 in words is "two hundred one trillion, one hundred ten billion, one hundred twenty-two million, one hundred ten thousand, two hundred twenty-one".