121961246788 has 12 divisors (see below), whose sum is σ = 213907535100. Its totient is φ = 60844808192.

The previous prime is 121961246767. The next prime is 121961246819. The reversal of 121961246788 is 887642169121.

It can be written as a sum of positive squares in 2 ways, for example, as 76268764224 + 45692482564 = 276168^2 + 213758^2 .

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, 33951781 + ... + 33955372.

It is an arithmetic number, because the mean of its divisors is an integer number (17825627925).

Almost surely, 2^121961246788 is an apocalyptic number.

It is an amenable number.

121961246788 is a deficient number, since it is larger than the sum of its proper divisors (91946288312).

121961246788 is a wasteful number, since it uses less digits than its factorization.

121961246788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67907606 (or 67907604 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 55.

The spelling of 121961246788 in words is "one hundred twenty-one billion, nine hundred sixty-one million, two hundred forty-six thousand, seven hundred eighty-eight".