111120002002121 has 4 divisors (see below), whose sum is σ = 126994288002432. Its totient is φ = 95245716001812.

The previous prime is 111120002002091. The next prime is 111120002002241. The reversal of 111120002002121 is 121200200021111.

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 111120002002121 - 2¹⁴ = 111120001985737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111120002002096 and 111120002002105.

It is not an unprimeable number, because it can be changed into a prime (111120002005121) 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, 7937143000145 + ... + 7937143000158.

It is an arithmetic number, because the mean of its divisors is an integer number (31748572000608).

Almost surely, 2^{111120002002121} is an apocalyptic number.

It is an amenable number.

111120002002121 is a deficient number, since it is larger than the sum of its proper divisors (15874286000311).

111120002002121 is an equidigital number, since it uses as much as digits as its factorization.

111120002002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15874286000310.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111120002002121 its reverse (121200200021111), we get a palindrome (232320202023232).

The spelling of 111120002002121 in words is "one hundred eleven trillion, one hundred twenty billion, two million, two thousand, one hundred twenty-one".