2122312277 has 2 divisors, whose sum is σ = 2122312278. Its totient is φ = 2122312276.

The previous prime is 2122312253. The next prime is 2122312303. The reversal of 2122312277 is 7722132212.

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., 1156408036 + 965904241 = 34006^2 + 31079^2 .

It is a cyclic number.

It is not a de Polignac number, because 2122312277 - 2⁸ = 2122312021 is a prime.

It is a super-2 number, since 2×2122312277² = 9008418802209849458, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2122312207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061156138 + 1061156139.

It is an arithmetic number, because the mean of its divisors is an integer number (1061156139).

Almost surely, 2^2122312277 is an apocalyptic number.

It is an amenable number.

2122312277 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122312277 is an equidigital number, since it uses as much as digits as its factorization.

2122312277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4704, while the sum is 29.

The square root of 2122312277 is about 46068.5606135030. The cubic root of 2122312277 is about 1285.0985358486.

Adding to 2122312277 its reverse (7722132212), we get a palindrome (9844444489).

The spelling of 2122312277 in words is "two billion, one hundred twenty-two million, three hundred twelve thousand, two hundred seventy-seven".