121643144053201 has 8 divisors (see below), whose sum is σ = 128799119222784. Its totient is φ = 114487224006720.

The previous prime is 121643144053159. The next prime is 121643144053219. The reversal of 121643144053201 is 102350441346121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121643144053201 - 2²³ = 121643135664593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121643144053231) 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 7 ways as a sum of consecutive naturals, for example, 9193825 + ... + 18105598.

It is an arithmetic number, because the mean of its divisors is an integer number (16099889902848).

Almost surely, 2^{121643144053201} is an apocalyptic number.

It is an amenable number.

121643144053201 is a deficient number, since it is larger than the sum of its proper divisors (7155975169583).

121643144053201 is a wasteful number, since it uses less digits than its factorization.

121643144053201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27561551.

The product of its (nonzero) digits is 69120, while the sum is 37.

Adding to 121643144053201 its reverse (102350441346121), we get a palindrome (223993585399322).

The spelling of 121643144053201 in words is "one hundred twenty-one trillion, six hundred forty-three billion, one hundred forty-four million, fifty-three thousand, two hundred one".