121100121112 has 32 divisors (see below), whose sum is σ = 240436505520. Its totient is φ = 56984227840.

The previous prime is 121100121101. The next prime is 121100121113. The reversal of 121100121112 is 211121001121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121100121092 and 121100121101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121100121113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2820687 + ... + 2863297.

Almost surely, 2^121100121112 is an apocalyptic number.

It is an amenable number.

121100121112 is a deficient number, since it is larger than the sum of its proper divisors (119336384408).

121100121112 is a wasteful number, since it uses less digits than its factorization.

121100121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63531 (or 63527 counting only the distinct ones).

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

Adding to 121100121112 its reverse (211121001121), we get a palindrome (332221122233).

The spelling of 121100121112 in words is "one hundred twenty-one billion, one hundred million, one hundred twenty-one thousand, one hundred twelve".