2122201748977 has 2 divisors, whose sum is σ = 2122201748978. Its totient is φ = 2122201748976.

The previous prime is 2122201748903. The next prime is 2122201748987. The reversal of 2122201748977 is 7798471022212.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1363018890256 + 759182858721 = 1167484^2 + 871311^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2122201748977 is a prime.

It is a super-2 number, since 2×2122201748977² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2122201748987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061100874488 + 1061100874489.

It is an arithmetic number, because the mean of its divisors is an integer number (1061100874489).

Almost surely, 2^{2122201748977} is an apocalyptic number.

It is an amenable number.

2122201748977 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122201748977 is an equidigital number, since it uses as much as digits as its factorization.

2122201748977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1580544, while the sum is 52.

The spelling of 2122201748977 in words is "two trillion, one hundred twenty-two billion, two hundred one million, seven hundred forty-eight thousand, nine hundred seventy-seven".