111002120121 has 8 divisors (see below), whose sum is σ = 148034315520. Its totient is φ = 73985669072.

The previous prime is 111002120083. The next prime is 111002120129. The reversal of 111002120121 is 121021200111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111002120121 - 2³⁰ = 109928378297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111002120097 and 111002120106.

It is not an unprimeable number, because it can be changed into a prime (111002120129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3919626 + ... + 3947843.

It is an arithmetic number, because the mean of its divisors is an integer number (18504289440).

Almost surely, 2^111002120121 is an apocalyptic number.

It is an amenable number.

111002120121 is a deficient number, since it is larger than the sum of its proper divisors (37032195399).

111002120121 is an equidigital number, since it uses as much as digits as its factorization.

111002120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7872175.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 111002120121 its reverse (121021200111), we get a palindrome (232023320232).

The spelling of 111002120121 in words is "one hundred eleven billion, two million, one hundred twenty thousand, one hundred twenty-one".