2121441215311 has 16 divisors (see below), whose sum is σ = 2319166080000. Its totient is φ = 1924530244000.

The previous prime is 2121441215269. The next prime is 2121441215323. The reversal of 2121441215311 is 1135121441212.

It is a cyclic number.

It is not a de Polignac number, because 2121441215311 - 2³¹ = 2119293731663 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2121441215311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121441215111) 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 15 ways as a sum of consecutive naturals, for example, 15422265 + ... + 15559213.

It is an arithmetic number, because the mean of its divisors is an integer number (144947880000).

Almost surely, 2^{2121441215311} is an apocalyptic number.

2121441215311 is a deficient number, since it is larger than the sum of its proper divisors (197724864689).

2121441215311 is a wasteful number, since it uses less digits than its factorization.

2121441215311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139910.

The product of its digits is 1920, while the sum is 28.

Adding to 2121441215311 its reverse (1135121441212), we get a palindrome (3256562656523).

The spelling of 2121441215311 in words is "two trillion, one hundred twenty-one billion, four hundred forty-one million, two hundred fifteen thousand, three hundred eleven".