2340221421121 has 2 divisors, whose sum is σ = 2340221421122. Its totient is φ = 2340221421120.

The previous prime is 2340221421119. The next prime is 2340221421133. The reversal of 2340221421121 is 1211241220432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1866789353025 + 473432068096 = 1366305^2 + 688064^2 .

It is a cyclic number.

It is not a de Polignac number, because 2340221421121 - 2¹ = 2340221421119 is a prime.

Together with 2340221421119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2340221481121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1170110710560 + 1170110710561.

It is an arithmetic number, because the mean of its divisors is an integer number (1170110710561).

Almost surely, 2^{2340221421121} is an apocalyptic number.

It is an amenable number.

2340221421121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2340221421121 is an equidigital number, since it uses as much as digits as its factorization.

2340221421121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 2340221421121 its reverse (1211241220432), we get a palindrome (3551462641553).

The spelling of 2340221421121 in words is "two trillion, three hundred forty billion, two hundred twenty-one million, four hundred twenty-one thousand, one hundred twenty-one".