111620201 has 12 divisors (see below), whose sum is σ = 140218176. Its totient is φ = 86976120.

The previous prime is 111620183. The next prime is 111620207. The reversal of 111620201 is 102026111.

It is not a de Polignac number, because 111620201 - 2¹⁰ = 111619177 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111620207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65045 + ... + 66738.

It is an arithmetic number, because the mean of its divisors is an integer number (11684848).

Almost surely, 2^111620201 is an apocalyptic number.

111620201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111620201 is a deficient number, since it is larger than the sum of its proper divisors (28597975).

111620201 is a wasteful number, since it uses less digits than its factorization.

111620201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131812 (or 131801 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 111620201 is about 10565.0461901499. The cubic root of 111620201 is about 481.4829729140.

Adding to 111620201 its reverse (102026111), we get a palindrome (213646312).

The spelling of 111620201 in words is "one hundred eleven million, six hundred twenty thousand, two hundred one".