1012111110001 has 4 divisors (see below), whose sum is σ = 1017961463412. Its totient is φ = 1006260756592.

The previous prime is 1012111109981. The next prime is 1012111110007. The reversal of 1012111110001 is 1000111112101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 953062110001 + 59049000000 = 976249^2 + 243000^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012111110001 - 2²⁹ = 1011574239089 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1012111110001.

It is not an unprimeable number, because it can be changed into a prime (1012111110007) 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, 2925176446 + ... + 2925176791.

It is an arithmetic number, because the mean of its divisors is an integer number (254490365853).

Almost surely, 2^{1012111110001} is an apocalyptic number.

It is an amenable number.

1012111110001 is a deficient number, since it is larger than the sum of its proper divisors (5850353411).

1012111110001 is an equidigital number, since it uses as much as digits as its factorization.

1012111110001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5850353410.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 1012111110001 its reverse (1000111112101), we get a palindrome (2012222222102).

The spelling of 1012111110001 in words is "one trillion, twelve billion, one hundred eleven million, one hundred ten thousand, one".