2122257677 has 2 divisors, whose sum is σ = 2122257678. Its totient is φ = 2122257676.

The previous prime is 2122257667. The next prime is 2122257689. The reversal of 2122257677 is 7767522212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1983277156 + 138980521 = 44534^2 + 11789^2 .

It is a cyclic number.

It is not a de Polignac number, because 2122257677 - 2⁴ = 2122257661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2122257637) 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, 1061128838 + 1061128839.

It is an arithmetic number, because the mean of its divisors is an integer number (1061128839).

Almost surely, 2^2122257677 is an apocalyptic number.

It is an amenable number.

2122257677 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122257677 is an equidigital number, since it uses as much as digits as its factorization.

2122257677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 164640, while the sum is 41.

The square root of 2122257677 is about 46067.9680146629. The cubic root of 2122257677 is about 1285.0875153243.

Adding to 2122257677 its reverse (7767522212), we get a palindrome (9889779889).

The spelling of 2122257677 in words is "two billion, one hundred twenty-two million, two hundred fifty-seven thousand, six hundred seventy-seven".