111011020010001 has 12 divisors (see below), whose sum is σ = 160417982082228. Its totient is φ = 73975624693344.

The previous prime is 111011020009991. The next prime is 111011020010041. The reversal of 111011020010001 is 100010020110111.

It can be written as a sum of positive squares in 2 ways, for example, as 29281301888400 + 81729718121601 = 5411220^2 + 9040449^2 .

It is not a de Polignac number, because 111011020010001 - 2⁹ = 111011020009489 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (111011020010041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2643476170 + ... + 2643518163.

It is an arithmetic number, because the mean of its divisors is an integer number (13368165173519).

Almost surely, 2^{111011020010001} is an apocalyptic number.

It is an amenable number.

111011020010001 is a deficient number, since it is larger than the sum of its proper divisors (49406962072227).

111011020010001 is a wasteful number, since it uses less digits than its factorization.

111011020010001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5286996672 (or 5286996669 counting only the distinct ones).

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

Adding to 111011020010001 its reverse (100010020110111), we get a palindrome (211021040120112).

The spelling of 111011020010001 in words is "one hundred eleven trillion, eleven billion, twenty million, ten thousand, one".