20001122210122 has 32 divisors (see below), whose sum is σ = 32120684582400. Its totient is φ = 9312273183600.

The previous prime is 20001122210099. The next prime is 20001122210161. The reversal of 20001122210122 is 22101222110002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20001122210096 and 20001122210105.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14755597 + ... + 16053967.

It is an arithmetic number, because the mean of its divisors is an integer number (1003771393200).

Almost surely, 2^{20001122210122} is an apocalyptic number.

20001122210122 is a deficient number, since it is larger than the sum of its proper divisors (12119562372278).

20001122210122 is a wasteful number, since it uses less digits than its factorization.

20001122210122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305322.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20001122210122 its reverse (22101222110002), we get a palindrome (42102344320124).

The spelling of 20001122210122 in words is "twenty trillion, one billion, one hundred twenty-two million, two hundred ten thousand, one hundred twenty-two".