221104130400020 has 96 divisors (see below), whose sum is σ = 531011913062400. Its totient is φ = 75755434011264.

The previous prime is 221104130400017. The next prime is 221104130400031. The reversal of 221104130400020 is 20004031401122.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 221104130399965 and 221104130400001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1225413371 + ... + 1225593789.

It is an arithmetic number, because the mean of its divisors is an integer number (5531374094400).

Almost surely, 2^{221104130400020} is an apocalyptic number.

221104130400020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221104130400020 is an abundant number, since it is smaller than the sum of its proper divisors (309907782662380).

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

221104130400020 is a wasteful number, since it uses less digits than its factorization.

221104130400020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186357 (or 186355 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 221104130400020 its reverse (20004031401122), we get a palindrome (241108161801142).

The spelling of 221104130400020 in words is "two hundred twenty-one trillion, one hundred four billion, one hundred thirty million, four hundred thousand, twenty".