22000222020 has 96 divisors (see below), whose sum is σ = 70487359488. Its totient is φ = 5022433152.

The previous prime is 22000222007. The next prime is 22000222031. The reversal of 22000222020 is 2022200022.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 22000221987 and 22000222005.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 313837 + ... + 377483.

It is an arithmetic number, because the mean of its divisors is an integer number (734243328).

Almost surely, 2^22000222020 is an apocalyptic number.

22000222020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22000222020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35243679744).

22000222020 is an abundant number, since it is smaller than the sum of its proper divisors (48487137468).

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

22000222020 is a wasteful number, since it uses less digits than its factorization.

22000222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64489 (or 64487 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

Adding to 22000222020 its reverse (2022200022), we get a palindrome (24022422042).

The spelling of 22000222020 in words is "twenty-two billion, two hundred twenty-two thousand, twenty".