221113131212020 has 48 divisors (see below), whose sum is σ = 478877353371648. Its totient is φ = 85708162592640.

The previous prime is 221113131212003. The next prime is 221113131212023. The reversal of 221113131212020 is 20212131311122.

It is a happy number.

It is a super-2 number, since 2×221113131212020² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221113131211982 and 221113131212000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221113131212023) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1012128151 + ... + 1012346590.

It is an arithmetic number, because the mean of its divisors is an integer number (9976611528576).

Almost surely, 2^{221113131212020} is an apocalyptic number.

221113131212020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221113131212020 is an abundant number, since it is smaller than the sum of its proper divisors (257764222159628).

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

221113131212020 is a wasteful number, since it uses less digits than its factorization.

221113131212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2024474920 (or 2024474918 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 221113131212020 its reverse (20212131311122), we get a palindrome (241325262523142).

The spelling of 221113131212020 in words is "two hundred twenty-one trillion, one hundred thirteen billion, one hundred thirty-one million, two hundred twelve thousand, twenty".