201022111102121 has 8 divisors (see below), whose sum is σ = 202803274773000. Its totient is φ = 199240986149632.

The previous prime is 201022111102073. The next prime is 201022111102129. The reversal of 201022111102121 is 121201111220102.

It can be written as a sum of positive squares in 4 ways, for example, as 1880905274521 + 199141205827600 = 1371461^2 + 14111740^2 .

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 201022111102121 - 2³⁸ = 200747233195177 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 201022111102121.

It is not an unprimeable number, because it can be changed into a prime (201022111102129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 800255 + ... + 20067003.

It is an arithmetic number, because the mean of its divisors is an integer number (25350409346625).

Almost surely, 2^{201022111102121} is an apocalyptic number.

It is an amenable number.

201022111102121 is a deficient number, since it is larger than the sum of its proper divisors (1781163670879).

201022111102121 is a wasteful number, since it uses less digits than its factorization.

201022111102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19359195.

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

Adding to 201022111102121 its reverse (121201111220102), we get a palindrome (322223222322223).

The spelling of 201022111102121 in words is "two hundred one trillion, twenty-two billion, one hundred eleven million, one hundred two thousand, one hundred twenty-one".