121210211121112 has 16 divisors (see below), whose sum is σ = 239230679844600. Its totient is φ = 57415363162560.

The previous prime is 121210211121101. The next prime is 121210211121143. The reversal of 121210211121112 is 211121112012121.

121210211121112 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 121210211121112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 398717799589 + ... + 398717799892.

Almost surely, 2^{121210211121112} is an apocalyptic number.

It is an amenable number.

121210211121112 is a deficient number, since it is larger than the sum of its proper divisors (118020468723488).

121210211121112 is a wasteful number, since it uses less digits than its factorization.

121210211121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797435599506 (or 797435599502 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 121210211121112 its reverse (211121112012121), we get a palindrome (332331323133233).

The spelling of 121210211121112 in words is "one hundred twenty-one trillion, two hundred ten billion, two hundred eleven million, one hundred twenty-one thousand, one hundred twelve".