221321001100133 has 4 divisors (see below), whose sum is σ = 241441092109248. Its totient is φ = 201200910091020.

The previous prime is 221321001100117. The next prime is 221321001100141. The reversal of 221321001100133 is 331001100123122.

It is a happy number.

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 221321001100133 - 2⁴ = 221321001100117 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 (221321001120133) 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, 10060045504541 + ... + 10060045504562.

It is an arithmetic number, because the mean of its divisors is an integer number (60360273027312).

Almost surely, 2^{221321001100133} is an apocalyptic number.

It is an amenable number.

221321001100133 is a deficient number, since it is larger than the sum of its proper divisors (20120091009115).

221321001100133 is a wasteful number, since it uses less digits than its factorization.

221321001100133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20120091009114.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 221321001100133 its reverse (331001100123122), we get a palindrome (552322101223255).

The spelling of 221321001100133 in words is "two hundred twenty-one trillion, three hundred twenty-one billion, one million, one hundred thousand, one hundred thirty-three".