221113002021 has 4 divisors (see below), whose sum is σ = 294817336032. Its totient is φ = 147408668012.

The previous prime is 221113002001. The next prime is 221113002023. The reversal of 221113002021 is 120200311122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221113002021 - 2¹⁷ = 221112870949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221113002023) 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, 36852167001 + ... + 36852167006.

It is an arithmetic number, because the mean of its divisors is an integer number (73704334008).

Almost surely, 2^221113002021 is an apocalyptic number.

It is an amenable number.

221113002021 is a deficient number, since it is larger than the sum of its proper divisors (73704334011).

221113002021 is an equidigital number, since it uses as much as digits as its factorization.

221113002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73704334010.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 221113002021 its reverse (120200311122), we get a palindrome (341313313143).

The spelling of 221113002021 in words is "two hundred twenty-one billion, one hundred thirteen million, two thousand, twenty-one".