20000122020 has 96 divisors (see below), whose sum is σ = 64368259200. Its totient is φ = 5149452672.

The previous prime is 20000122003. The next prime is 20000122061. The reversal of 20000122020 is 2022100002.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20000121993 and 20000122011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 622914 + ... + 654233.

It is an arithmetic number, because the mean of its divisors is an integer number (670502700).

Almost surely, 2^20000122020 is an apocalyptic number.

20000122020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20000122020 is an abundant number, since it is smaller than the sum of its proper divisors (44368137180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20000122020 is a wasteful number, since it uses less digits than its factorization.

20000122020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1277194 (or 1277186 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 20000122020 its reverse (2022100002), we get a palindrome (22022222022).

The spelling of 20000122020 in words is "twenty billion, one hundred twenty-two thousand, twenty".