111120121102 has 4 divisors (see below), whose sum is σ = 166680181656. Its totient is φ = 55560060550.

The previous prime is 111120121093. The next prime is 111120121171. The reversal of 111120121102 is 201121021111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27780030274 + ... + 27780030277.

It is an arithmetic number, because the mean of its divisors is an integer number (41670045414).

Almost surely, 2^111120121102 is an apocalyptic number.

111120121102 is a deficient number, since it is larger than the sum of its proper divisors (55560060554).

111120121102 is an equidigital number, since it uses as much as digits as its factorization.

111120121102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55560060553.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111120121102 its reverse (201121021111), we get a palindrome (312241142213).

Subtracting 111120121102 from its reverse (201121021111), we obtain a palindrome (90000900009).

The spelling of 111120121102 in words is "one hundred eleven billion, one hundred twenty million, one hundred twenty-one thousand, one hundred two".