2122257705 has 16 divisors (see below), whose sum is σ = 3417244224. Its totient is φ = 1124660160.

The previous prime is 2122257701. The next prime is 2122257707. The reversal of 2122257705 is 5077522212.

It is not a de Polignac number, because 2122257705 - 2² = 2122257701 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2122257701) 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 in 15 ways as a sum of consecutive naturals, for example, 448231 + ... + 452940.

It is an arithmetic number, because the mean of its divisors is an integer number (213577764).

Almost surely, 2^2122257705 is an apocalyptic number.

It is an amenable number.

2122257705 is a deficient number, since it is larger than the sum of its proper divisors (1294986519).

2122257705 is a wasteful number, since it uses less digits than its factorization.

2122257705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901336.

The product of its (nonzero) digits is 19600, while the sum is 33.

The square root of 2122257705 is about 46067.9683185617. The cubic root of 2122257705 is about 1285.0875209759.

Adding to 2122257705 its reverse (5077522212), we get a palindrome (7199779917).

The spelling of 2122257705 in words is "two billion, one hundred twenty-two million, two hundred fifty-seven thousand, seven hundred five".