20021122200123 has 32 divisors (see below), whose sum is σ = 32392199980800. Its totient is φ = 12120951916800.

The previous prime is 20021122200113. The next prime is 20021122200169. The reversal of 20021122200123 is 32100222112002.

20021122200123 is a `hidden beast` number, since 200 + 21 + 122 + 200 + 123 = 666.

It is not a de Polignac number, because 20021122200123 - 2⁶ = 20021122200059 is a prime.

It is a super-2 number, since 2×20021122200123² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20021122200096 and 20021122200105.

It is not an unprimeable number, because it can be changed into a prime (20021122200113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36005673 + ... + 36557498.

It is an arithmetic number, because the mean of its divisors is an integer number (1012256249400).

Almost surely, 2^{20021122200123} is an apocalyptic number.

20021122200123 is a deficient number, since it is larger than the sum of its proper divisors (12371077780677).

20021122200123 is a wasteful number, since it uses less digits than its factorization.

20021122200123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72564120 (or 72564114 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 20021122200123 its reverse (32100222112002), we get a palindrome (52121344312125).

The spelling of 20021122200123 in words is "twenty trillion, twenty-one billion, one hundred twenty-two million, two hundred thousand, one hundred twenty-three".