2130123277 has 2 divisors, whose sum is σ = 2130123278. Its totient is φ = 2130123276.

The previous prime is 2130123271. The next prime is 2130123299. The reversal of 2130123277 is 7723210312.

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., 2107360836 + 22762441 = 45906^2 + 4771^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2130123277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2130123271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065061638 + 1065061639.

It is an arithmetic number, because the mean of its divisors is an integer number (1065061639).

Almost surely, 2^2130123277 is an apocalyptic number.

It is an amenable number.

2130123277 is a deficient number, since it is larger than the sum of its proper divisors (1).

2130123277 is an equidigital number, since it uses as much as digits as its factorization.

2130123277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 2130123277 is about 46153.2585740162. The cubic root of 2130123277 is about 1286.6731729904.

Adding to 2130123277 its reverse (7723210312), we get a palindrome (9853333589).

The spelling of 2130123277 in words is "two billion, one hundred thirty million, one hundred twenty-three thousand, two hundred seventy-seven".