1000001111145 has 16 divisors (see below), whose sum is σ = 1600500453120. Its totient is φ = 533167700864.

The previous prime is 1000001111143. The next prime is 1000001111159. The reversal of 1000001111145 is 5411111000001.

It is a cyclic number.

It is not a de Polignac number, because 1000001111145 - 2¹ = 1000001111143 is a prime.

It is a super-2 number, since 2×1000001111145² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1000001111143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10339329 + ... + 10435598.

It is an arithmetic number, because the mean of its divisors is an integer number (100031278320).

Almost surely, 2^{1000001111145} is an apocalyptic number.

1000001111145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1000001111145 is a deficient number, since it is larger than the sum of its proper divisors (600499341975).

1000001111145 is a wasteful number, since it uses less digits than its factorization.

1000001111145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20778144.

The product of its (nonzero) digits is 20, while the sum is 15.

Adding to 1000001111145 its reverse (5411111000001), we get a palindrome (6411112111146).

The spelling of 1000001111145 in words is "one trillion, one million, one hundred eleven thousand, one hundred forty-five".