2123213177 has 2 divisors, whose sum is σ = 2123213178. Its totient is φ = 2123213176.

The previous prime is 2123213171. The next prime is 2123213227. The reversal of 2123213177 is 7713123212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1878008896 + 245204281 = 43336^2 + 15659^2 .

It is a cyclic number.

It is not a de Polignac number, because 2123213177 - 2²⁰ = 2122164601 is a prime.

It is not a weakly prime, because it can be changed into another prime (2123213171) 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, 1061606588 + 1061606589.

It is an arithmetic number, because the mean of its divisors is an integer number (1061606589).

Almost surely, 2^2123213177 is an apocalyptic number.

It is an amenable number.

2123213177 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123213177 is an equidigital number, since it uses as much as digits as its factorization.

2123213177 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3528, while the sum is 29.

The square root of 2123213177 is about 46078.3373940510. The cubic root of 2123213177 is about 1285.2803472161.

Adding to 2123213177 its reverse (7713123212), we get a palindrome (9836336389).

The spelling of 2123213177 in words is "two billion, one hundred twenty-three million, two hundred thirteen thousand, one hundred seventy-seven".