121020211212112 has 160 divisors (see below), whose sum is σ = 246695399055360. Its totient is φ = 57462769351680.

The previous prime is 121020211212083. The next prime is 121020211212113. The reversal of 121020211212112 is 211212112020121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 121020211212112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121020211212113) 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 in 31 ways as a sum of consecutive naturals, for example, 3924243189 + ... + 3924274027.

It is an arithmetic number, because the mean of its divisors is an integer number (1541846244096).

Almost surely, 2^{121020211212112} is an apocalyptic number.

It is an amenable number.

121020211212112 is an abundant number, since it is smaller than the sum of its proper divisors (125675187843248).

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

121020211212112 is a wasteful number, since it uses less digits than its factorization.

121020211212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32129 (or 32123 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 121020211212112 its reverse (211212112020121), we get a palindrome (332232323232233).

The spelling of 121020211212112 in words is "one hundred twenty-one trillion, twenty billion, two hundred eleven million, two hundred twelve thousand, one hundred twelve".