111211122100201 has 4 divisors (see below), whose sum is σ = 111238904048272. Its totient is φ = 111183340152132.

The previous prime is 111211122100157. The next prime is 111211122100213. The reversal of 111211122100201 is 102001221112111.

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 111211122100201 - 2²⁵ = 111211088545769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111211122100231) 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, 13890968031 + ... + 13890976036.

It is an arithmetic number, because the mean of its divisors is an integer number (27809726012068).

Almost surely, 2^{111211122100201} is an apocalyptic number.

It is an amenable number.

111211122100201 is a deficient number, since it is larger than the sum of its proper divisors (27781948071).

111211122100201 is an equidigital number, since it uses as much as digits as its factorization.

111211122100201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27781948070.

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

Adding to 111211122100201 its reverse (102001221112111), we get a palindrome (213212343212312).

The spelling of 111211122100201 in words is "one hundred eleven trillion, two hundred eleven billion, one hundred twenty-two million, one hundred thousand, two hundred one".