201201022122111 has 24 divisors (see below), whose sum is σ = 322417662577920. Its totient is φ = 119873233515600.

The previous prime is 201201022122017. The next prime is 201201022122193. The reversal of 201201022122111 is 111221220102102.

201201022122111 is a `hidden beast` number, since 20 + 1 + 201 + 0 + 221 + 221 + 1 + 1 = 666.

It is not a de Polignac number, because 201201022122111 - 2²¹ = 201201020024959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201201022122511) 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, 17223159895 + ... + 17223171576.

It is an arithmetic number, because the mean of its divisors is an integer number (13434069274080).

Almost surely, 2^{201201022122111} is an apocalyptic number.

201201022122111 is a deficient number, since it is larger than the sum of its proper divisors (121216640455809).

201201022122111 is a wasteful number, since it uses less digits than its factorization.

201201022122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34446331547 (or 34446331544 counting only the distinct ones).

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

Adding to 201201022122111 its reverse (111221220102102), we get a palindrome (312422242224213).

The spelling of 201201022122111 in words is "two hundred one trillion, two hundred one billion, twenty-two million, one hundred twenty-two thousand, one hundred eleven".