20012222020 has 24 divisors (see below), whose sum is σ = 48029333184. Its totient is φ = 6861333216.

The previous prime is 20012222011. The next prime is 20012222029. The reversal of 20012222020 is 2022221002.

It is an interprime number because it is at equal distance from previous prime (20012222011) and next prime (20012222029).

It is not an unprimeable number, because it can be changed into a prime (20012222029) 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, 71472082 + ... + 71472361.

It is an arithmetic number, because the mean of its divisors is an integer number (2001222216).

Almost surely, 2^20012222020 is an apocalyptic number.

20012222020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20012222020 is an abundant number, since it is smaller than the sum of its proper divisors (28017111164).

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

20012222020 is a wasteful number, since it uses less digits than its factorization.

20012222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142944459 (or 142944457 counting only the distinct ones).

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

Adding to 20012222020 its reverse (2022221002), we get a palindrome (22034443022).

The spelling of 20012222020 in words is "twenty billion, twelve million, two hundred twenty-two thousand, twenty".