111102122201 has 18 divisors (see below), whose sum is σ = 137290889358. Its totient is φ = 89628591360.

The previous prime is 111102122141. The next prime is 111102122239. The reversal of 111102122201 is 102221201111.

It can be written as a sum of positive squares in 3 ways, for example, as 16961155225 + 94140966976 = 130235^2 + 306824^2 .

It is not a de Polignac number, because 111102122201 - 2¹⁰ = 111102121177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111102122291) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3908660 + ... + 3936981.

It is an arithmetic number, because the mean of its divisors is an integer number (7627271631).

Almost surely, 2^111102122201 is an apocalyptic number.

It is an amenable number.

111102122201 is a deficient number, since it is larger than the sum of its proper divisors (26188767157).

111102122201 is an equidigital number, since it uses as much as digits as its factorization.

111102122201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7845689 (or 7845665 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111102122201 its reverse (102221201111), we get a palindrome (213323323312).

The spelling of 111102122201 in words is "one hundred eleven billion, one hundred two million, one hundred twenty-two thousand, two hundred one".