2121311322001 has 8 divisors (see below), whose sum is σ = 2135852532800. Its totient is φ = 2106776595600.

The previous prime is 2121311321957. The next prime is 2121311322019. The reversal of 2121311322001 is 1002231131212.

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 2121311322001 - 2⁹ = 2121311321489 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 2121311322001.

It is not an unprimeable number, because it can be changed into a prime (2121311322101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 963666 + ... + 2274043.

It is an arithmetic number, because the mean of its divisors is an integer number (266981566600).

Almost surely, 2^{2121311322001} is an apocalyptic number.

It is an amenable number.

2121311322001 is a deficient number, since it is larger than the sum of its proper divisors (14541210799).

2121311322001 is a wasteful number, since it uses less digits than its factorization.

2121311322001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3242199.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 2121311322001 its reverse (1002231131212), we get a palindrome (3123542453213).

The spelling of 2121311322001 in words is "two trillion, one hundred twenty-one billion, three hundred eleven million, three hundred twenty-two thousand, one".