121568163201 has 64 divisors (see below), whose sum is σ = 193905465600. Its totient is φ = 75985827840.

The previous prime is 121568163193. The next prime is 121568163203. The reversal of 121568163201 is 102361865121.

121568163201 is a `hidden beast` number, since 1 + 2 + 15 + 6 + 8 + 1 + 632 + 0 + 1 = 666.

It is not a de Polignac number, because 121568163201 - 2³ = 121568163193 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121568163203) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 4015561 + ... + 4045721.

It is an arithmetic number, because the mean of its divisors is an integer number (3029772900).

Almost surely, 2^121568163201 is an apocalyptic number.

It is an amenable number.

121568163201 is a deficient number, since it is larger than the sum of its proper divisors (72337302399).

121568163201 is an frugal number, since it uses more digits than its factorization.

121568163201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30298 (or 30280 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The spelling of 121568163201 in words is "one hundred twenty-one billion, five hundred sixty-eight million, one hundred sixty-three thousand, two hundred one".