20022000020 has 48 divisors (see below), whose sum is σ = 47862880128. Its totient is φ = 6964172160.

The previous prime is 20022000017. The next prime is 20022000041. The reversal of 20022000020 is 2000022002.

It is a junction number, because it is equal to n+sod(n) for n = 20021999971 and 20022000007.

It is a congruent number.

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, 1973399 + ... + 1983518.

It is an arithmetic number, because the mean of its divisors is an integer number (997143336).

Almost surely, 2^20022000020 is an apocalyptic number.

20022000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20022000020 is an abundant number, since it is smaller than the sum of its proper divisors (27840880108).

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

20022000020 is a wasteful number, since it uses less digits than its factorization.

20022000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3956960 (or 3956958 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 8.

Adding to 20022000020 its reverse (2000022002), we get a palindrome (22022022022).

The spelling of 20022000020 in words is "twenty billion, twenty-two million, twenty", and thus it is an aban number and an uban number.