111112102001 has 4 divisors (see below), whose sum is σ = 111249109104. Its totient is φ = 110975094900.

The previous prime is 111112101977. The next prime is 111112102033. The reversal of 111112102001 is 100201211111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111112102001 is a prime.

It is a super-2 number, since 2×111112102001² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111112102081) 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, 68502335 + ... + 68503956.

It is an arithmetic number, because the mean of its divisors is an integer number (27812277276).

Almost surely, 2^111112102001 is an apocalyptic number.

It is an amenable number.

111112102001 is a deficient number, since it is larger than the sum of its proper divisors (137007103).

111112102001 is an equidigital number, since it uses as much as digits as its factorization.

111112102001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137007102.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 111112102001 its reverse (100201211111), we get a palindrome (211313313112).

It can be divided in two parts, 11111 and 2102001, that added together give a palindrome (2113112).

The spelling of 111112102001 in words is "one hundred eleven billion, one hundred twelve million, one hundred two thousand, one".