121112121013042 has 16 divisors (see below), whose sum is σ = 181813706091072. Its totient is φ = 60507561715920.

The previous prime is 121112121013021. The next prime is 121112121013049. The reversal of 121112121013042 is 240310121211121.

It is not an unprimeable number, because it can be changed into a prime (121112121013049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23480817 + ... + 28170427.

It is an arithmetic number, because the mean of its divisors is an integer number (11363356630692).

Almost surely, 2^{121112121013042} is an apocalyptic number.

121112121013042 is a deficient number, since it is larger than the sum of its proper divisors (60701585078030).

121112121013042 is a wasteful number, since it uses less digits than its factorization.

121112121013042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4699953.

The product of its (nonzero) digits is 192, while the sum is 22.

Adding to 121112121013042 its reverse (240310121211121), we get a palindrome (361422242224163).

The spelling of 121112121013042 in words is "one hundred twenty-one trillion, one hundred twelve billion, one hundred twenty-one million, thirteen thousand, forty-two".