121201200144242 has 24 divisors (see below), whose sum is σ = 197616377068176. Its totient is φ = 55709443556928.

The previous prime is 121201200144221. The next prime is 121201200144263. The reversal of 121201200144242 is 242441002102121.

It is an interprime number because it is at equal distance from previous prime (121201200144221) and next prime (121201200144263).

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 11 ways as a sum of consecutive naturals, for example, 2438238608 + ... + 2438288315.

It is an arithmetic number, because the mean of its divisors is an integer number (8234015711174).

Almost surely, 2^{121201200144242} is an apocalyptic number.

121201200144242 is a deficient number, since it is larger than the sum of its proper divisors (76415176923934).

121201200144242 is a wasteful number, since it uses less digits than its factorization.

121201200144242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4876527002 (or 4876526985 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 26.

Adding to 121201200144242 its reverse (242441002102121), we get a palindrome (363642202246363).

The spelling of 121201200144242 in words is "one hundred twenty-one trillion, two hundred one billion, two hundred million, one hundred forty-four thousand, two hundred forty-two".