20202222020 has 36 divisors (see below), whose sum is σ = 42552351660. Its totient is φ = 8056640448.

The previous prime is 20202221989. The next prime is 20202222023. The reversal of 20202222020 is 2022220202.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12796586884 + 7405635136 = 113122^2 + 86056^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20202221986 and 20202222004.

It is not an unprimeable number, because it can be changed into a prime (20202222023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2403986 + ... + 2412374.

Almost surely, 2^20202222020 is an apocalyptic number.

20202222020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20202222020 is an abundant number, since it is smaller than the sum of its proper divisors (22350129640).

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

20202222020 is an equidigital number, since it uses as much as digits as its factorization.

20202222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9092 (or 8743 counting only the distinct ones).

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

Adding to 20202222020 its reverse (2022220202), we get a palindrome (22224442222).

The spelling of 20202222020 in words is "twenty billion, two hundred two million, two hundred twenty-two thousand, twenty".