121201200022012 has 48 divisors (see below), whose sum is σ = 244998927548928. Its totient is φ = 51849936638720.

The previous prime is 121201200021989. The next prime is 121201200022061. The reversal of 121201200022012 is 210220002102121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45781923 + ... + 48356869.

It is an arithmetic number, because the mean of its divisors is an integer number (5104144323936).

Almost surely, 2^{121201200022012} is an apocalyptic number.

It is an amenable number.

121201200022012 is an abundant number, since it is smaller than the sum of its proper divisors (123797727526916).

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

121201200022012 is a wasteful number, since it uses less digits than its factorization.

121201200022012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2637906 (or 2637904 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121201200022012 its reverse (210220002102121), we get a palindrome (331421202124133).

The spelling of 121201200022012 in words is "one hundred twenty-one trillion, two hundred one billion, two hundred million, twenty-two thousand, twelve".