121112111020112 has 10 divisors (see below), whose sum is σ = 234654715101498. Its totient is φ = 60556055510048.

The previous prime is 121112111020111. The next prime is 121112111020151. The reversal of 121112111020112 is 211020111211121.

It can be written as a sum of positive squares in only one way, i.e., 102844829867536 + 18267281152576 = 10141244^2 + 4274024^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121112111020111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3784753469363 + ... + 3784753469394.

Almost surely, 2^{121112111020112} is an apocalyptic number.

It is an amenable number.

121112111020112 is a deficient number, since it is larger than the sum of its proper divisors (113542604081386).

121112111020112 is an equidigital number, since it uses as much as digits as its factorization.

121112111020112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7569506938765 (or 7569506938759 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 121112111020112 its reverse (211020111211121), we get a palindrome (332132222231233).

The spelling of 121112111020112 in words is "one hundred twenty-one trillion, one hundred twelve billion, one hundred eleven million, twenty thousand, one hundred twelve".