121200111020112 has 20 divisors (see below), whose sum is σ = 313100286802080. Its totient is φ = 40400037006688.

The previous prime is 121200111020081. The next prime is 121200111020129. The reversal of 121200111020112 is 211020111002121.

It is a happy number.

121200111020112 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×121200111020112² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121200111020091 and 121200111020100.

It is a congruent 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, 1262501156412 + ... + 1262501156507.

It is an arithmetic number, because the mean of its divisors is an integer number (15655014340104).

Almost surely, 2^{121200111020112} is an apocalyptic number.

121200111020112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121200111020112 is an abundant number, since it is smaller than the sum of its proper divisors (191900175781968).

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

121200111020112 is a wasteful number, since it uses less digits than its factorization.

121200111020112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2525002312930 (or 2525002312924 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121200111020112 its reverse (211020111002121), we get a palindrome (332220222022233).

The spelling of 121200111020112 in words is "one hundred twenty-one trillion, two hundred billion, one hundred eleven million, twenty thousand, one hundred twelve".