221320123021133 has 8 divisors (see below), whose sum is σ = 234847281243960. Its totient is φ = 207849445626880.

The previous prime is 221320123021021. The next prime is 221320123021141. The reversal of 221320123021133 is 331120321023122.

It can be written as a sum of positive squares in 4 ways, for example, as 46681730754409 + 174638392266724 = 6832403^2 + 13215082^2 .

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 221320123021133 - 2²⁴ = 221320106243917 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 (221320123021633) 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 7 ways as a sum of consecutive naturals, for example, 14120199068 + ... + 14120214741.

It is an arithmetic number, because the mean of its divisors is an integer number (29355910155495).

Almost surely, 2^{221320123021133} is an apocalyptic number.

It is an amenable number.

221320123021133 is a deficient number, since it is larger than the sum of its proper divisors (13527158222827).

221320123021133 is a wasteful number, since it uses less digits than its factorization.

221320123021133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28240414287.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 221320123021133 its reverse (331120321023122), we get a palindrome (552440444044255).

The spelling of 221320123021133 in words is "two hundred twenty-one trillion, three hundred twenty billion, one hundred twenty-three million, twenty-one thousand, one hundred thirty-three".