121100221112 has 32 divisors (see below), whose sum is σ = 257399259600. Its totient is φ = 52950703104.

The previous prime is 121100221091. The next prime is 121100221141. The reversal of 121100221112 is 211122001121.

121100221112 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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, 30640793 + ... + 30644744.

Almost surely, 2^121100221112 is an apocalyptic number.

It is an amenable number.

121100221112 is an abundant number, since it is smaller than the sum of its proper divisors (136299038488).

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

121100221112 is a wasteful number, since it uses less digits than its factorization.

121100221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61285575 (or 61285571 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121100221112 its reverse (211122001121), we get a palindrome (332222222233).

The spelling of 121100221112 in words is "one hundred twenty-one billion, one hundred million, two hundred twenty-one thousand, one hundred twelve".