121021012122112 has 40 divisors (see below), whose sum is σ = 252318944455776. Its totient is φ = 57879614487552.

The previous prime is 121021012122079. The next prime is 121021012122149. The reversal of 121021012122112 is 211221210120121.

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 121021012122112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5138448318 + ... + 5138471869.

Almost surely, 2^{121021012122112} is an apocalyptic number.

It is an amenable number.

121021012122112 is an abundant number, since it is smaller than the sum of its proper divisors (131297932333664).

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

121021012122112 is an equidigital number, since it uses as much as digits as its factorization.

121021012122112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10276920228 (or 10276920212 counting only the distinct ones).

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

Adding to 121021012122112 its reverse (211221210120121), we get a palindrome (332242222242233).

The spelling of 121021012122112 in words is "one hundred twenty-one trillion, twenty-one billion, twelve million, one hundred twenty-two thousand, one hundred twelve".