2134243012261 has 2 divisors, whose sum is σ = 2134243012262. Its totient is φ = 2134243012260.

The previous prime is 2134243012159. The next prime is 2134243012367. The reversal of 2134243012261 is 1622103424312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2052657944100 + 81585068161 = 1432710^2 + 285631^2 .

It is a cyclic number.

It is not a de Polignac number, because 2134243012261 - 2⁹ = 2134243011749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2134243012061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1067121506130 + 1067121506131.

It is an arithmetic number, because the mean of its divisors is an integer number (1067121506131).

Almost surely, 2^{2134243012261} is an apocalyptic number.

It is an amenable number.

2134243012261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2134243012261 is an equidigital number, since it uses as much as digits as its factorization.

2134243012261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 2134243012261 its reverse (1622103424312), we get a palindrome (3756346436573).

The spelling of 2134243012261 in words is "two trillion, one hundred thirty-four billion, two hundred forty-three million, twelve thousand, two hundred sixty-one".