221021122310133 has 4 divisors (see below), whose sum is σ = 294694829746848. Its totient is φ = 147347414873420.

The previous prime is 221021122310089. The next prime is 221021122310137. The reversal of 221021122310133 is 331013221120122.

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 221021122310133 - 2³⁰ = 221020048568309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221021122310137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36836853718353 + ... + 36836853718358.

It is an arithmetic number, because the mean of its divisors is an integer number (73673707436712).

Almost surely, 2^{221021122310133} is an apocalyptic number.

It is an amenable number.

221021122310133 is a deficient number, since it is larger than the sum of its proper divisors (73673707436715).

221021122310133 is an equidigital number, since it uses as much as digits as its factorization.

221021122310133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73673707436714.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 221021122310133 its reverse (331013221120122), we get a palindrome (552034343430255).

The spelling of 221021122310133 in words is "two hundred twenty-one trillion, twenty-one billion, one hundred twenty-two million, three hundred ten thousand, one hundred thirty-three".