121321301211001 has 16 divisors (see below), whose sum is σ = 127132113254400. Its totient is φ = 115555201569808.

The previous prime is 121321301210987. The next prime is 121321301211031. The reversal of 121321301211001 is 100112103123121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121321301211001 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121321301211001.

It is not an unprimeable number, because it can be changed into a prime (121321301211031) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 112851630 + ... + 113921608.

It is an arithmetic number, because the mean of its divisors is an integer number (7945757078400).

Almost surely, 2^{121321301211001} is an apocalyptic number.

It is an amenable number.

121321301211001 is a deficient number, since it is larger than the sum of its proper divisors (5810812043399).

121321301211001 is a wasteful number, since it uses less digits than its factorization.

121321301211001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090868.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 121321301211001 its reverse (100112103123121), we get a palindrome (221433404334122).

The spelling of 121321301211001 in words is "one hundred twenty-one trillion, three hundred twenty-one billion, three hundred one million, two hundred eleven thousand, one".