221031563133 has 8 divisors (see below), whose sum is σ = 294719400448. Its totient is φ = 147349050624.

The previous prime is 221031563111. The next prime is 221031563183. The reversal of 221031563133 is 331365130122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221031563133 - 2⁶ = 221031563069 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221031563133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221031563183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1233316 + ... + 1401117.

It is an arithmetic number, because the mean of its divisors is an integer number (36839925056).

Almost surely, 2^221031563133 is an apocalyptic number.

It is an amenable number.

221031563133 is a deficient number, since it is larger than the sum of its proper divisors (73687837315).

221031563133 is a wasteful number, since it uses less digits than its factorization.

221031563133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2662403.

The product of its (nonzero) digits is 9720, while the sum is 30.

Adding to 221031563133 its reverse (331365130122), we get a palindrome (552396693255).

The spelling of 221031563133 in words is "two hundred twenty-one billion, thirty-one million, five hundred sixty-three thousand, one hundred thirty-three".