121210211122012 has 24 divisors (see below), whose sum is σ = 217643650408800. Its totient is φ = 59031102493440.

The previous prime is 121210211122001. The next prime is 121210211122087. The reversal of 121210211122012 is 210221112012121.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 598834512 + ... + 599036887.

It is an arithmetic number, because the mean of its divisors is an integer number (9068485433700).

Almost surely, 2^{121210211122012} is an apocalyptic number.

It is an amenable number.

121210211122012 is a deficient number, since it is larger than the sum of its proper divisors (96433439286788).

121210211122012 is a wasteful number, since it uses less digits than its factorization.

121210211122012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197872061 (or 1197872059 counting only the distinct ones).

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

Adding to 121210211122012 its reverse (210221112012121), we get a palindrome (331431323134133).

The spelling of 121210211122012 in words is "one hundred twenty-one trillion, two hundred ten billion, two hundred eleven million, one hundred twenty-two thousand, twelve".