133321011144221 has 4 divisors (see below), whose sum is σ = 133324151328732. Its totient is φ = 133317870959712.

The previous prime is 133321011144193. The next prime is 133321011144227. The reversal of 133321011144221 is 122441110123331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 90814705605625 + 42506305538596 = 9529675^2 + 6519686^2 .

It is a cyclic number.

It is not a de Polignac number, because 133321011144221 - 2⁶ = 133321011144157 is a prime.

It is a super-3 number, since 3×133321011144221³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133321011144227) 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, 1570028570 + ... + 1570113483.

It is an arithmetic number, because the mean of its divisors is an integer number (33331037832183).

Almost surely, 2^{133321011144221} is an apocalyptic number.

It is an amenable number.

133321011144221 is a deficient number, since it is larger than the sum of its proper divisors (3140184511).

133321011144221 is an equidigital number, since it uses as much as digits as its factorization.

133321011144221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3140184510.

The product of its (nonzero) digits is 3456, while the sum is 29.

Adding to 133321011144221 its reverse (122441110123331), we get a palindrome (255762121267552).

The spelling of 133321011144221 in words is "one hundred thirty-three trillion, three hundred twenty-one billion, eleven million, one hundred forty-four thousand, two hundred twenty-one".