221113333021 has 8 divisors (see below), whose sum is σ = 255202942464. Its totient is φ = 187649221200.

The previous prime is 221113333019. The next prime is 221113333027. The reversal of 221113333021 is 120333311122.

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

It is not a de Polignac number, because 221113333021 - 2¹ = 221113333019 is a prime.

It is a super-2 number, since 2×221113333021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221113332983 and 221113333001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221113333027) 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, 156373645 + ... + 156375058.

It is an arithmetic number, because the mean of its divisors is an integer number (31900367808).

Almost surely, 2^221113333021 is an apocalyptic number.

It is an amenable number.

221113333021 is a deficient number, since it is larger than the sum of its proper divisors (34089609443).

221113333021 is a wasteful number, since it uses less digits than its factorization.

221113333021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312748811.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 221113333021 its reverse (120333311122), we get a palindrome (341446644143).

The spelling of 221113333021 in words is "two hundred twenty-one billion, one hundred thirteen million, three hundred thirty-three thousand, twenty-one".