111010001001001 has 8 divisors (see below), whose sum is σ = 111030944951808. Its totient is φ = 110989058370000.

The previous prime is 111010001000999. The next prime is 111010001001047. The reversal of 111010001001001 is 100100100010111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111010001001001 - 2¹ = 111010001000999 is a prime.

It is a Duffinian number.

111010001001001 is a modest number, since divided by 1001001 gives 111010 as remainder.

It is not an unprimeable number, because it can be changed into a prime (111010001001401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176800746 + ... + 177427516.

It is an arithmetic number, because the mean of its divisors is an integer number (13878868118976).

Almost surely, 2^{111010001001001} is an apocalyptic number.

It is an amenable number.

111010001001001 is a deficient number, since it is larger than the sum of its proper divisors (20943950807).

111010001001001 is an equidigital number, since it uses as much as digits as its factorization.

111010001001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659903.

The product of its (nonzero) digits is 1, while the sum is 7.

Adding to 111010001001001 its reverse (100100100010111), we get a palindrome (211110101011112).

The spelling of 111010001001001 in words is "one hundred eleven trillion, ten billion, one million, one thousand, one".