111011120001 has 32 divisors (see below), whose sum is σ = 169883402240. Its totient is φ = 71570595600.

The previous prime is 111011119993. The next prime is 111011120009. The reversal of 111011120001 is 100021110111.

It is an interprime number because it is at equal distance from previous prime (111011119993) and next prime (111011120009).

It is not a de Polignac number, because 111011120001 - 2³ = 111011119993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111011120009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1186146 + ... + 1276308.

It is an arithmetic number, because the mean of its divisors is an integer number (5308856320).

Almost surely, 2^111011120001 is an apocalyptic number.

It is an amenable number.

111011120001 is a deficient number, since it is larger than the sum of its proper divisors (58872282239).

111011120001 is a wasteful number, since it uses less digits than its factorization.

111011120001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91674 (or 91668 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 111011120001 its reverse (100021110111), we get a palindrome (211032230112).

The spelling of 111011120001 in words is "one hundred eleven billion, eleven million, one hundred twenty thousand, one".