2123223257 has 2 divisors, whose sum is σ = 2123223258. Its totient is φ = 2123223256.

The previous prime is 2123223199. The next prime is 2123223259. The reversal of 2123223257 is 7523223212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1948692736 + 174530521 = 44144^2 + 13211^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2123223257 is a prime.

Together with 2123223259, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2123223259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061611628 + 1061611629.

It is an arithmetic number, because the mean of its divisors is an integer number (1061611629).

Almost surely, 2^2123223257 is an apocalyptic number.

It is an amenable number.

2123223257 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123223257 is an equidigital number, since it uses as much as digits as its factorization.

2123223257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 29.

The square root of 2123223257 is about 46078.4467728677. The cubic root of 2123223257 is about 1285.2823811782.

Adding to 2123223257 its reverse (7523223212), we get a palindrome (9646446469).

The spelling of 2123223257 in words is "two billion, one hundred twenty-three million, two hundred twenty-three thousand, two hundred fifty-seven".