22220022020 has 24 divisors (see below), whose sum is σ = 53328053184. Its totient is φ = 7618293216.

The previous prime is 22220022001. The next prime is 22220022029. The reversal of 22220022020 is 2022002222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 22220021986 and 22220022004.

It is not an unprimeable number, because it can be changed into a prime (22220022029) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 79357082 + ... + 79357361.

It is an arithmetic number, because the mean of its divisors is an integer number (2222002216).

Almost surely, 2^22220022020 is an apocalyptic number.

22220022020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22220022020 is an abundant number, since it is smaller than the sum of its proper divisors (31108031164).

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

22220022020 is a wasteful number, since it uses less digits than its factorization.

22220022020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158714459 (or 158714457 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

Adding to 22220022020 its reverse (2022002222), we get a palindrome (24242024242).

The spelling of 22220022020 in words is "twenty-two billion, two hundred twenty million, twenty-two thousand, twenty".