2122010849857 has 2 divisors, whose sum is σ = 2122010849858. Its totient is φ = 2122010849856.

The previous prime is 2122010849837. The next prime is 2122010849909. The reversal of 2122010849857 is 7589480102212.

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., 1458802580481 + 663208269376 = 1207809^2 + 814376^2 .

It is a cyclic number.

It is not a de Polignac number, because 2122010849857 - 2¹¹ = 2122010847809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2122010849857.

It is not a weakly prime, because it can be changed into another prime (2122010849837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061005424928 + 1061005424929.

It is an arithmetic number, because the mean of its divisors is an integer number (1061005424929).

Almost surely, 2^{2122010849857} is an apocalyptic number.

It is an amenable number.

2122010849857 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122010849857 is an equidigital number, since it uses as much as digits as its factorization.

2122010849857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 645120, while the sum is 49.

The spelling of 2122010849857 in words is "two trillion, one hundred twenty-two billion, ten million, eight hundred forty-nine thousand, eight hundred fifty-seven".