20442200404420 has 12 divisors (see below), whose sum is σ = 42928620849324. Its totient is φ = 8176880161760.

The previous prime is 20442200404391. The next prime is 20442200404453. The reversal of 20442200404420 is 2440400224402.

It can be written as a sum of positive squares in 2 ways, for example, as 3794641664256 + 16647558740164 = 1947984^2 + 4080142^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 511055010091 + ... + 511055010130.

It is an arithmetic number, because the mean of its divisors is an integer number (3577385070777).

Almost surely, 2^{20442200404420} is an apocalyptic number.

20442200404420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20442200404420 is an abundant number, since it is smaller than the sum of its proper divisors (22486420444904).

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

20442200404420 is a wasteful number, since it uses less digits than its factorization.

20442200404420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022110020230 (or 1022110020228 counting only the distinct ones).

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

Adding to 20442200404420 its reverse (2440400224402), we get a palindrome (22882600628822).

The spelling of 20442200404420 in words is "twenty trillion, four hundred forty-two billion, two hundred million, four hundred four thousand, four hundred twenty".