221113201021 has 8 divisors (see below), whose sum is σ = 225768479040. Its totient is φ = 216506164512.

The previous prime is 221113201009. The next prime is 221113201033. The reversal of 221113201021 is 120102311122.

It is an interprime number because it is at equal distance from previous prime (221113201009) and next prime (221113201033).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221113201021 - 2⁵ = 221113200989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221113200986 and 221113201004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221113201121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12051115 + ... + 12069448.

It is an arithmetic number, because the mean of its divisors is an integer number (28221059880).

Almost surely, 2^221113201021 is an apocalyptic number.

It is an amenable number.

221113201021 is a deficient number, since it is larger than the sum of its proper divisors (4655278019).

221113201021 is a wasteful number, since it uses less digits than its factorization.

221113201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24120755.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 221113201021 its reverse (120102311122), we get a palindrome (341215512143).

The spelling of 221113201021 in words is "two hundred twenty-one billion, one hundred thirteen million, two hundred one thousand, twenty-one".