22220012020 has 48 divisors (see below), whose sum is σ = 46902916368. Its totient is φ = 8842199040.

The previous prime is 22220011991. The next prime is 22220012021. The reversal of 22220012020 is 2021002222.

It can be written as a sum of positive squares in 8 ways, for example, as 4634069476 + 17585942544 = 68074^2 + 132612^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220012021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6905452 + ... + 6908668.

It is an arithmetic number, because the mean of its divisors is an integer number (977144091).

Almost surely, 2^22220012020 is an apocalyptic number.

22220012020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22220012020 is an abundant number, since it is smaller than the sum of its proper divisors (24682904348).

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

22220012020 is a wasteful number, since it uses less digits than its factorization.

22220012020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4900 (or 4898 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 22220012020 its reverse (2021002222), we get a palindrome (24241014242).

The spelling of 22220012020 in words is "twenty-two billion, two hundred twenty million, twelve thousand, twenty".