121211202110012 has 24 divisors (see below), whose sum is σ = 243365682071904. Its totient is φ = 51745527078912.

The previous prime is 121211202110003. The next prime is 121211202110027. The reversal of 121211202110012 is 210011202112121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8422116353 + ... + 8422130744.

It is an arithmetic number, because the mean of its divisors is an integer number (10140236752996).

Almost surely, 2^{121211202110012} is an apocalyptic number.

It is an amenable number.

121211202110012 is an abundant number, since it is smaller than the sum of its proper divisors (122154479961892).

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

121211202110012 is a wasteful number, since it uses less digits than its factorization.

121211202110012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16844247365 (or 16844247363 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121211202110012 its reverse (210011202112121), we get a palindrome (331222404222133).

The spelling of 121211202110012 in words is "one hundred twenty-one trillion, two hundred eleven billion, two hundred two million, one hundred ten thousand, twelve".