111221011102201 has 48 divisors (see below), whose sum is σ = 150274208544768. Its totient is φ = 79934130244800.

The previous prime is 111221011102163. The next prime is 111221011102241. The reversal of 111221011102201 is 102201110122111.

It is not a de Polignac number, because 111221011102201 - 2⁹ = 111221011101689 is a prime.

It is a super-2 number, since 2×111221011102201² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111221011102241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12547470 + ... + 19490536.

It is an arithmetic number, because the mean of its divisors is an integer number (3130712678016).

Almost surely, 2^{111221011102201} is an apocalyptic number.

111221011102201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111221011102201 is a deficient number, since it is larger than the sum of its proper divisors (39053197442567).

111221011102201 is a wasteful number, since it uses less digits than its factorization.

111221011102201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6944342 (or 6944329 counting only the distinct ones).

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

Adding to 111221011102201 its reverse (102201110122111), we get a palindrome (213422121224312).

The spelling of 111221011102201 in words is "one hundred eleven trillion, two hundred twenty-one billion, eleven million, one hundred two thousand, two hundred one".