2121240030311 has 4 divisors (see below), whose sum is σ = 2150298112992. Its totient is φ = 2092181947632.

The previous prime is 2121240030293. The next prime is 2121240030319. The reversal of 2121240030311 is 1130300421212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2121240030311 - 2¹⁴ = 2121240013927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121240030319) 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 3 ways as a sum of consecutive naturals, for example, 14529041231 + ... + 14529041376.

It is an arithmetic number, because the mean of its divisors is an integer number (537574528248).

Almost surely, 2^{2121240030311} is an apocalyptic number.

2121240030311 is a deficient number, since it is larger than the sum of its proper divisors (29058082681).

2121240030311 is an equidigital number, since it uses as much as digits as its factorization.

2121240030311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29058082680.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 2121240030311 its reverse (1130300421212), we get a palindrome (3251540451523).

The spelling of 2121240030311 in words is "two trillion, one hundred twenty-one billion, two hundred forty million, thirty thousand, three hundred eleven".