111000001121 has 4 divisors (see below), whose sum is σ = 111001514544. Its totient is φ = 110998487700.

The previous prime is 111000001081. The next prime is 111000001171. The reversal of 111000001121 is 121100000111.

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 111000001121 - 2¹⁸ = 110999738977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111000001099 and 111000001108.

It is not an unprimeable number, because it can be changed into a prime (111000001171) 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, 640775 + ... + 795356.

It is an arithmetic number, because the mean of its divisors is an integer number (27750378636).

Almost surely, 2^111000001121 is an apocalyptic number.

It is an amenable number.

111000001121 is a deficient number, since it is larger than the sum of its proper divisors (1513423).

111000001121 is an equidigital number, since it uses as much as digits as its factorization.

111000001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513422.

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

Adding to 111000001121 its reverse (121100000111), we get a palindrome (232100001232).

The spelling of 111000001121 in words is "one hundred eleven billion, one thousand, one hundred twenty-one".