221130333013 has 4 divisors (see below), whose sum is σ = 228755516940. Its totient is φ = 213505149088.

The previous prime is 221130332971. The next prime is 221130333029. The reversal of 221130333013 is 310333031122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310333031122 = 2 ⋅155166515561.

It can be written as a sum of positive squares in 2 ways, for example, as 180011821284 + 41118511729 = 424278^2 + 202777^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221130333013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221130330013) 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, 3812591920 + ... + 3812591977.

It is an arithmetic number, because the mean of its divisors is an integer number (57188879235).

Almost surely, 2^221130333013 is an apocalyptic number.

It is an amenable number.

221130333013 is a deficient number, since it is larger than the sum of its proper divisors (7625183927).

221130333013 is an equidigital number, since it uses as much as digits as its factorization.

221130333013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7625183926.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 221130333013 its reverse (310333031122), we get a palindrome (531463364135).

The spelling of 221130333013 in words is "two hundred twenty-one billion, one hundred thirty million, three hundred thirty-three thousand, thirteen".