111221120201121 has 24 divisors (see below), whose sum is σ = 184193482821504. Its totient is φ = 63350569143360.

The previous prime is 111221120201119. The next prime is 111221120201129. The reversal of 111221120201121 is 121102021122111.

It is a happy number.

111221120201121 is a `hidden beast` number, since 1 + 1 + 1 + 221 + 120 + 201 + 121 = 666.

It is not a de Polignac number, because 111221120201121 - 2¹ = 111221120201119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111221120201094 and 111221120201103.

It is not an unprimeable number, because it can be changed into a prime (111221120201129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2838267556 + ... + 2838306741.

It is an arithmetic number, because the mean of its divisors is an integer number (7674728450896).

Almost surely, 2^{111221120201121} is an apocalyptic number.

It is an amenable number.

111221120201121 is a deficient number, since it is larger than the sum of its proper divisors (72972362620383).

111221120201121 is a wasteful number, since it uses less digits than its factorization.

111221120201121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5676574621 (or 5676574618 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 111221120201121 its reverse (121102021122111), we get a palindrome (232323141323232).

The spelling of 111221120201121 in words is "one hundred eleven trillion, two hundred twenty-one billion, one hundred twenty million, two hundred one thousand, one hundred twenty-one".