121112120110 has 32 divisors (see below), whose sum is σ = 220671101952. Its totient is φ = 47851900320.

The previous prime is 121112120089. The next prime is 121112120149. The reversal of 121112120110 is 11021211121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5625787 + ... + 5647273.

It is an arithmetic number, because the mean of its divisors is an integer number (6895971936).

Almost surely, 2^121112120110 is an apocalyptic number.

121112120110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121112120110 is a deficient number, since it is larger than the sum of its proper divisors (99558981842).

121112120110 is a wasteful number, since it uses less digits than its factorization.

121112120110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28368.

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

Adding to 121112120110 its reverse (11021211121), we get a palindrome (132133331231).

The spelling of 121112120110 in words is "one hundred twenty-one billion, one hundred twelve million, one hundred twenty thousand, one hundred ten".