111111102201 has 16 divisors (see below), whose sum is σ = 168642938880. Its totient is φ = 64412232720.

The previous prime is 111111102199. The next prime is 111111102227. The reversal of 111111102201 is 102201111111.

It is not a de Polignac number, because 111111102201 - 2¹ = 111111102199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111111102241) 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, 73194961 + ... + 73196478.

It is an arithmetic number, because the mean of its divisors is an integer number (10540183680).

Almost surely, 2^111111102201 is an apocalyptic number.

111111102201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111111102201 is a deficient number, since it is larger than the sum of its proper divisors (57531836679).

111111102201 is a wasteful number, since it uses less digits than its factorization.

111111102201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146391476.

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

Adding to 111111102201 its reverse (102201111111), we get a palindrome (213312213312).

It can be divided in two parts, 111111 and 102201, that multiplied together give a palindrome (11355655311).

The spelling of 111111102201 in words is "one hundred eleven billion, one hundred eleven million, one hundred two thousand, two hundred one".