2126949923213 has 2 divisors, whose sum is σ = 2126949923214. Its totient is φ = 2126949923212.

The previous prime is 2126949923201. The next prime is 2126949923233. The reversal of 2126949923213 is 3123299496212.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1501303726729 + 625646196484 = 1225277^2 + 790978^2 .

It is a cyclic number.

It is not a de Polignac number, because 2126949923213 - 2⁶ = 2126949923149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2126949923233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1063474961606 + 1063474961607.

It is an arithmetic number, because the mean of its divisors is an integer number (1063474961607).

Almost surely, 2^{2126949923213} is an apocalyptic number.

It is an amenable number.

2126949923213 is a deficient number, since it is larger than the sum of its proper divisors (1).

2126949923213 is an equidigital number, since it uses as much as digits as its factorization.

2126949923213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2519424, while the sum is 53.

The spelling of 2126949923213 in words is "two trillion, one hundred twenty-six billion, nine hundred forty-nine million, nine hundred twenty-three thousand, two hundred thirteen".