20422440242020 has 24 divisors (see below), whose sum is σ = 42887950165368. Its totient is φ = 8168818828800.

The previous prime is 20422440241999. The next prime is 20422440242059. The reversal of 20422440242020 is 2024204422402.

It can be written as a sum of positive squares in 4 ways, for example, as 4820802624 + 20417619439396 = 69432^2 + 4518586^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20422440242020.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8761591 + ... + 10844830.

It is an arithmetic number, because the mean of its divisors is an integer number (1786997923557).

Almost surely, 2^{20422440242020} is an apocalyptic number.

20422440242020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20422440242020 is an abundant number, since it is smaller than the sum of its proper divisors (22465509923348).

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

20422440242020 is a wasteful number, since it uses less digits than its factorization.

20422440242020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19658511 (or 19658509 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 20422440242020 its reverse (2024204422402), we get a palindrome (22446644664422).

The spelling of 20422440242020 in words is "twenty trillion, four hundred twenty-two billion, four hundred forty million, two hundred forty-two thousand, twenty".