2121340320411 has 32 divisors (see below), whose sum is σ = 3080890935360. Its totient is φ = 1290504652800.

The previous prime is 2121340320377. The next prime is 2121340320419. The reversal of 2121340320411 is 1140230431212.

It is not a de Polignac number, because 2121340320411 - 2¹⁰ = 2121340319387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2121340320419) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17367031 + ... + 17488751.

It is an arithmetic number, because the mean of its divisors is an integer number (96277841730).

Almost surely, 2^{2121340320411} is an apocalyptic number.

2121340320411 is a deficient number, since it is larger than the sum of its proper divisors (959550614949).

2121340320411 is a wasteful number, since it uses less digits than its factorization.

2121340320411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126847.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 2121340320411 its reverse (1140230431212), we get a palindrome (3261570751623).

The spelling of 2121340320411 in words is "two trillion, one hundred twenty-one billion, three hundred forty million, three hundred twenty thousand, four hundred eleven".