221281223133 has 8 divisors (see below), whose sum is σ = 295411824288. Its totient is φ = 147335718704.

The previous prime is 221281223069. The next prime is 221281223143. The reversal of 221281223133 is 331322182122.

221281223133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 221281223133 - 2⁶ = 221281223069 is a prime.

It is a super-2 number, since 2×221281223133² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221281223133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221281223143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46271391 + ... + 46276172.

It is an arithmetic number, because the mean of its divisors is an integer number (36926478036).

Almost surely, 2^221281223133 is an apocalyptic number.

It is an amenable number.

221281223133 is a deficient number, since it is larger than the sum of its proper divisors (74130601155).

221281223133 is an equidigital number, since it uses as much as digits as its factorization.

221281223133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92548363.

The product of its digits is 6912, while the sum is 30.

The spelling of 221281223133 in words is "two hundred twenty-one billion, two hundred eighty-one million, two hundred twenty-three thousand, one hundred thirty-three".