121971110060 has 24 divisors (see below), whose sum is σ = 271206351360. Its totient is φ = 45918535424.

The previous prime is 121971110029. The next prime is 121971110081. The reversal of 121971110060 is 60011179121.

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 7 ways as a sum of consecutive naturals, for example, 179368940 + ... + 179369619.

It is an arithmetic number, because the mean of its divisors is an integer number (11300264640).

Almost surely, 2^121971110060 is an apocalyptic number.

121971110060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121971110060 is an abundant number, since it is smaller than the sum of its proper divisors (149235241300).

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

121971110060 is a wasteful number, since it uses less digits than its factorization.

121971110060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358738585 (or 358738583 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 29.

Adding to 121971110060 its reverse (60011179121), we get a palindrome (181982289181).

The spelling of 121971110060 in words is "one hundred twenty-one billion, nine hundred seventy-one million, one hundred ten thousand, sixty".