201201100011111 has 16 divisors (see below), whose sum is σ = 287939688659424. Its totient is φ = 124514459956224.

The previous prime is 201201100011103. The next prime is 201201100011139. The reversal of 201201100011111 is 111110001102102.

It is not a de Polignac number, because 201201100011111 - 2³ = 201201100011103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201201100011511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27021363456 + ... + 27021370901.

It is an arithmetic number, because the mean of its divisors is an integer number (17996230541214).

Almost surely, 2^{201201100011111} is an apocalyptic number.

201201100011111 is a deficient number, since it is larger than the sum of its proper divisors (86738588648313).

201201100011111 is a wasteful number, since it uses less digits than its factorization.

201201100011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54042734450.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 201201100011111 its reverse (111110001102102), we get a palindrome (312311101113213).

The spelling of 201201100011111 in words is "two hundred one trillion, two hundred one billion, one hundred million, eleven thousand, one hundred eleven".