221113200020 has 12 divisors (see below), whose sum is σ = 464337720084. Its totient is φ = 88445280000.

The previous prime is 221113200019. The next prime is 221113200023. The reversal of 221113200020 is 20002311122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 83084603536 + 138028596484 = 288244^2 + 371522^2 .

It is a junction number, because it is equal to n+sod(n) for n = 221113199968 and 221113200004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221113200023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5527829981 + ... + 5527830020.

It is an arithmetic number, because the mean of its divisors is an integer number (38694810007).

Almost surely, 2^221113200020 is an apocalyptic number.

221113200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221113200020 is an abundant number, since it is smaller than the sum of its proper divisors (243224520064).

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

221113200020 is a wasteful number, since it uses less digits than its factorization.

221113200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11055660010 (or 11055660008 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 221113200020 its reverse (20002311122), we get a palindrome (241115511142).

The spelling of 221113200020 in words is "two hundred twenty-one billion, one hundred thirteen million, two hundred thousand, twenty".