201111011221121 has 8 divisors (see below), whose sum is σ = 203669725545600. Its totient is φ = 198552622029840.

The previous prime is 201111011221097. The next prime is 201111011221123. The reversal of 201111011221121 is 121122110111102.

201111011221121 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 a cyclic number.

It is not a de Polignac number, because 201111011221121 - 2²⁶ = 201110944112257 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 201111011221121.

It is not an unprimeable number, because it can be changed into a prime (201111011221123) 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, 80038211 + ... + 82512648.

It is an arithmetic number, because the mean of its divisors is an integer number (25458715693200).

Almost surely, 2^{201111011221121} is an apocalyptic number.

It is an amenable number.

201111011221121 is a deficient number, since it is larger than the sum of its proper divisors (2558714324479).

201111011221121 is a wasteful number, since it uses less digits than its factorization.

201111011221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162566599.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 201111011221121 its reverse (121122110111102), we get a palindrome (322233121332223).

The spelling of 201111011221121 in words is "two hundred one trillion, one hundred eleven billion, eleven million, two hundred twenty-one thousand, one hundred twenty-one".