121230111112 has 16 divisors (see below), whose sum is σ = 247970682000. Its totient is φ = 55104595920.

The previous prime is 121230111109. The next prime is 121230111193. The reversal of 121230111112 is 211111032121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 688807362 + ... + 688807537.

It is an arithmetic number, because the mean of its divisors is an integer number (15498167625).

Almost surely, 2^121230111112 is an apocalyptic number.

It is an amenable number.

121230111112 is an abundant number, since it is smaller than the sum of its proper divisors (126740570888).

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

121230111112 is a wasteful number, since it uses less digits than its factorization.

121230111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1377614916 (or 1377614912 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 121230111112 its reverse (211111032121), we get a palindrome (332341143233).

The spelling of 121230111112 in words is "one hundred twenty-one billion, two hundred thirty million, one hundred eleven thousand, one hundred twelve".