121110111120 has 40 divisors (see below), whose sum is σ = 375441345216. Its totient is φ = 32296029568.

The previous prime is 121110111119. The next prime is 121110111121. The reversal of 121110111120 is 21111011121.

It is an interprime number because it is at equal distance from previous prime (121110111119) and next prime (121110111121).

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 121110111096 and 121110111105.

It is not an unprimeable number, because it can be changed into a prime (121110111121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252312492 + ... + 252312971.

Almost surely, 2^121110111120 is an apocalyptic number.

121110111120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121110111120 is an abundant number, since it is smaller than the sum of its proper divisors (254331234096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121110111120 is a wasteful number, since it uses less digits than its factorization.

121110111120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504625479 (or 504625473 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 121110111120 its reverse (21111011121), we get a palindrome (142221122241).

Subtracting from 121110111120 its reverse (21111011121), we obtain a palindrome (99999099999).

It can be divided in two parts, 1211101 and 11120, that added together give a palindrome (1222221).

The spelling of 121110111120 in words is "one hundred twenty-one billion, one hundred ten million, one hundred eleven thousand, one hundred twenty".