11112110001 has 6 divisors (see below), whose sum is σ = 16050825570. Its totient is φ = 7408073328.

The previous prime is 11112109997. The next prime is 11112110011. The reversal of 11112110001 is 10001121111.

It can be written as a sum of positive squares in only one way, i.e., 10662627600 + 449482401 = 103260^2 + 21201^2 .

It is not a de Polignac number, because 11112110001 - 2² = 11112109997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 1234678889 = 11112110001 / (1 + 1 + 1 + 1 + 2 + 1 + 1 + 0 + 0 + 0 + 1).

It is not an unprimeable number, because it can be changed into a prime (11112110011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 617339436 + ... + 617339453.

It is an arithmetic number, because the mean of its divisors is an integer number (2675137595).

Almost surely, 2^11112110001 is an apocalyptic number.

It is an amenable number.

11112110001 is a deficient number, since it is larger than the sum of its proper divisors (4938715569).

11112110001 is a wasteful number, since it uses less digits than its factorization.

11112110001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234678895 (or 1234678892 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 11112110001 its reverse (10001121111), we get a palindrome (21113231112).

It can be divided in two parts, 1111 and 2110001, that added together give a palindrome (2111112).

The spelling of 11112110001 in words is "eleven billion, one hundred twelve million, one hundred ten thousand, one".