111220101200121 has 32 divisors (see below), whose sum is σ = 150876449003520. Its totient is φ = 72856411408704.

The previous prime is 111220101200107. The next prime is 111220101200129. The reversal of 111220101200121 is 121002101022111.

It is a happy number.

It is not a de Polignac number, because 111220101200121 - 2¹³ = 111220101191929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111220101200121.

It is not an unprimeable number, because it can be changed into a prime (111220101200129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3915772906 + ... + 3915801308.

It is an arithmetic number, because the mean of its divisors is an integer number (4714889031360).

Almost surely, 2^{111220101200121} is an apocalyptic number.

It is an amenable number.

111220101200121 is a deficient number, since it is larger than the sum of its proper divisors (39656347803399).

111220101200121 is a wasteful number, since it uses less digits than its factorization.

111220101200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37885.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111220101200121 its reverse (121002101022111), we get a palindrome (232222202222232).

The spelling of 111220101200121 in words is "one hundred eleven trillion, two hundred twenty billion, one hundred one million, two hundred thousand, one hundred twenty-one".