1111000400001 has 36 divisors (see below), whose sum is σ = 1700377612752. Its totient is φ = 724907712168.

The previous prime is 1111000399967. The next prime is 1111000400023. The reversal of 1111000400001 is 1000040001111.

It is a de Polignac number, because none of the positive numbers 2^k-1111000400001 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 (1111000400051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 498075 + ... + 1571648.

Almost surely, 2^{1111000400001} is an apocalyptic number.

It is an amenable number.

1111000400001 is a deficient number, since it is larger than the sum of its proper divisors (589377212751).

1111000400001 is an frugal number, since it uses more digits than its factorization.

1111000400001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2069832 (or 2069773 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1111000400001 its reverse (1000040001111), we get a palindrome (2111040401112).

The spelling of 1111000400001 in words is "one trillion, one hundred eleven billion, four hundred thousand, one".