111010001001 has 8 divisors (see below), whose sum is σ = 153117242880. Its totient is φ = 71454713232.

The previous prime is 111010000961. The next prime is 111010001057. The reversal of 111010001001 is 100100010111.

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

It is not a de Polignac number, because 111010001001 - 2⁷ = 111010000873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111010002001) 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, 637988425 + ... + 637988598.

It is an arithmetic number, because the mean of its divisors is an integer number (19139655360).

Almost surely, 2^111010001001 is an apocalyptic number.

It is an amenable number.

111010001001 is a deficient number, since it is larger than the sum of its proper divisors (42107241879).

111010001001 is a wasteful number, since it uses less digits than its factorization.

111010001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275977055.

The product of its (nonzero) digits is 1, while the sum is 6.

Adding to 111010001001 its reverse (100100010111), we get a palindrome (211110011112).

The spelling of 111010001001 in words is "one hundred eleven billion, ten million, one thousand, one".