20201020122122 has 12 divisors (see below), whose sum is σ = 35248718784690. Its totient is φ = 8657580052296.

The previous prime is 20201020122089. The next prime is 20201020122149. The reversal of 20201020122122 is 22122102010202.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19769041245121 + 431978877001 = 4446239^2 + 657251^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20201020122122.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 103066429097 + ... + 103066429292.

Almost surely, 2^{20201020122122} is an apocalyptic number.

20201020122122 is a deficient number, since it is larger than the sum of its proper divisors (15047698662568).

20201020122122 is a wasteful number, since it uses less digits than its factorization.

20201020122122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206132858405 (or 206132858398 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20201020122122 its reverse (22122102010202), we get a palindrome (42323122132324).

The spelling of 20201020122122 in words is "twenty trillion, two hundred one billion, twenty million, one hundred twenty-two thousand, one hundred twenty-two".