121201012101001 has 8 divisors (see below), whose sum is σ = 138641709905280. Its totient is φ = 103791881172768.

The previous prime is 121201012100989. The next prime is 121201012101017. The reversal of 121201012101001 is 100101210102121.

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 121201012101001 - 2¹⁹ = 121201011576713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121201012101041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7891710781 + ... + 7891726138.

It is an arithmetic number, because the mean of its divisors is an integer number (17330213738160).

Almost surely, 2^{121201012101001} is an apocalyptic number.

It is an amenable number.

121201012101001 is a deficient number, since it is larger than the sum of its proper divisors (17440697804279).

121201012101001 is a wasteful number, since it uses less digits than its factorization.

121201012101001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15783438023.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121201012101001 its reverse (100101210102121), we get a palindrome (221302222203122).

The spelling of 121201012101001 in words is "one hundred twenty-one trillion, two hundred one billion, twelve million, one hundred one thousand, one".