111120001001 has 4 divisors (see below), whose sum is σ = 111151332432. Its totient is φ = 111088669572.

The previous prime is 111120000997. The next prime is 111120001049. The reversal of 111120001001 is 100100021111.

It is a happy number.

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 not a de Polignac number, because 111120001001 - 2² = 111120000997 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 111120001001.

It is not an unprimeable number, because it can be changed into a prime (111120001061) 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, 15660395 + ... + 15667488.

It is an arithmetic number, because the mean of its divisors is an integer number (27787833108).

Almost surely, 2^111120001001 is an apocalyptic number.

It is an amenable number.

111120001001 is a deficient number, since it is larger than the sum of its proper divisors (31331431).

111120001001 is an equidigital number, since it uses as much as digits as its factorization.

111120001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31331430.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 111120001001 its reverse (100100021111), we get a palindrome (211220022112).

The spelling of 111120001001 in words is "one hundred eleven billion, one hundred twenty million, one thousand, one".