111112021001121 has 24 divisors (see below), whose sum is σ = 172376100721440. Its totient is φ = 63478182382272.

The previous prime is 111112021001057. The next prime is 111112021001279. The reversal of 111112021001121 is 121100120211111.

It is not a de Polignac number, because 111112021001121 - 2⁶ = 111112021001057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111112021001121.

It is not an unprimeable number, because it can be changed into a prime (111112021081121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85070191 + ... + 86366436.

It is an arithmetic number, because the mean of its divisors is an integer number (7182337530060).

Almost surely, 2^{111112021001121} is an apocalyptic number.

It is an amenable number.

111112021001121 is a deficient number, since it is larger than the sum of its proper divisors (61264079720319).

111112021001121 is a wasteful number, since it uses less digits than its factorization.

111112021001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171441053 (or 171441046 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 111112021001121 its reverse (121100120211111), we get a palindrome (232212141212232).

The spelling of 111112021001121 in words is "one hundred eleven trillion, one hundred twelve billion, twenty-one million, one thousand, one hundred twenty-one".