2122945477 has 2 divisors, whose sum is σ = 2122945478. Its totient is φ = 2122945476.

The previous prime is 2122945469. The next prime is 2122945501. The reversal of 2122945477 is 7745492212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1501640001 + 621305476 = 38751^2 + 24926^2 .

It is a cyclic number.

It is not a de Polignac number, because 2122945477 - 2³ = 2122945469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2122945417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061472738 + 1061472739.

It is an arithmetic number, because the mean of its divisors is an integer number (1061472739).

Almost surely, 2^2122945477 is an apocalyptic number.

It is an amenable number.

2122945477 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122945477 is an equidigital number, since it uses as much as digits as its factorization.

2122945477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 282240, while the sum is 43.

The square root of 2122945477 is about 46075.4324667713. The cubic root of 2122945477 is about 1285.2263278311.

The spelling of 2122945477 in words is "two billion, one hundred twenty-two million, nine hundred forty-five thousand, four hundred seventy-seven".