2121113231201 has 8 divisors (see below), whose sum is σ = 2142481185000. Its totient is φ = 2099752470400.

The previous prime is 2121113231191. The next prime is 2121113231207. The reversal of 2121113231201 is 1021323111212.

It can be written as a sum of positive squares in 4 ways, for example, as 535566366976 + 1585546864225 = 731824^2 + 1259185^2 .

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 2121113231201 - 2⁶ = 2121113231137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2121113231207) 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, 1204526 + ... + 2386023.

It is an arithmetic number, because the mean of its divisors is an integer number (267810148125).

Almost surely, 2^{2121113231201} is an apocalyptic number.

It is an amenable number.

2121113231201 is a deficient number, since it is larger than the sum of its proper divisors (21367953799).

2121113231201 is a wasteful number, since it uses less digits than its factorization.

2121113231201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3596499.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 2121113231201 its reverse (1021323111212), we get a palindrome (3142436342413).

The spelling of 2121113231201 in words is "two trillion, one hundred twenty-one billion, one hundred thirteen million, two hundred thirty-one thousand, two hundred one".