1001001111008 has 24 divisors (see below), whose sum is σ = 1975402011240. Its totient is φ = 499311711360.

The previous prime is 1001001111001. The next prime is 1001001111017. The reversal of 1001001111008 is 8001111001001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1001001110983 and 1001001111001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001001111001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37137698 + ... + 37164641.

It is an arithmetic number, because the mean of its divisors is an integer number (82308417135).

Almost surely, 2^{1001001111008} is an apocalyptic number.

It is an amenable number.

1001001111008 is a deficient number, since it is larger than the sum of its proper divisors (974400900232).

1001001111008 is an equidigital number, since it uses as much as digits as its factorization.

1001001111008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74302770 (or 74302762 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1001001111008 its reverse (8001111001001), we get a palindrome (9002112112009).

The spelling of 1001001111008 in words is "one trillion, one billion, one million, one hundred eleven thousand, eight".