121220331012012 has 24 divisors (see below), whose sum is σ = 291971549965312. Its totient is φ = 39103332584400.

The previous prime is 121220331011999. The next prime is 121220331012073. The reversal of 121220331012012 is 210210133022121.

It is a self number, because there is not a number n which added to its sum of digits gives 121220331012012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162930552064 + ... + 162930552807.

Almost surely, 2^{121220331012012} is an apocalyptic number.

121220331012012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121220331012012 is an abundant number, since it is smaller than the sum of its proper divisors (170751218953300).

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

121220331012012 is a wasteful number, since it uses less digits than its factorization.

121220331012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325861104909 (or 325861104907 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 121220331012012 its reverse (210210133022121), we get a palindrome (331430464034133).

The spelling of 121220331012012 in words is "one hundred twenty-one trillion, two hundred twenty billion, three hundred thirty-one million, twelve thousand, twelve".