200122110021 has 16 divisors (see below), whose sum is σ = 270468491904. Its totient is φ = 131605315584.

The previous prime is 200122110017. The next prime is 200122110043. The reversal of 200122110021 is 120011221002.

It is not a de Polignac number, because 200122110021 - 2² = 200122110017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200122109979 and 200122110006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200122110091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1180596 + ... + 1339421.

It is an arithmetic number, because the mean of its divisors is an integer number (16904280744).

Almost surely, 2^200122110021 is an apocalyptic number.

It is an amenable number.

200122110021 is a deficient number, since it is larger than the sum of its proper divisors (70346381883).

200122110021 is a wasteful number, since it uses less digits than its factorization.

200122110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2520380.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 200122110021 its reverse (120011221002), we get a palindrome (320133331023).

The spelling of 200122110021 in words is "two hundred billion, one hundred twenty-two million, one hundred ten thousand, twenty-one".