221133332231 has 8 divisors (see below), whose sum is σ = 253827407520. Its totient is φ = 188715156768.

The previous prime is 221133332213. The next prime is 221133332237. The reversal of 221133332231 is 132233331122.

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 221133332231 - 2³⁰ = 220059590407 is a prime.

It is a super-2 number, since 2×221133332231² (a number of 23 digits) contains 22 as substring.

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 221133332231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221133332237) 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, 68973236 + ... + 68976441.

It is an arithmetic number, because the mean of its divisors is an integer number (31728425940).

Almost surely, 2^221133332231 is an apocalyptic number.

221133332231 is a deficient number, since it is larger than the sum of its proper divisors (32694075289).

221133332231 is a wasteful number, since it uses less digits than its factorization.

221133332231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137949913.

The product of its digits is 3888, while the sum is 26.

Adding to 221133332231 its reverse (132233331122), we get a palindrome (353366663353).

The spelling of 221133332231 in words is "two hundred twenty-one billion, one hundred thirty-three million, three hundred thirty-two thousand, two hundred thirty-one".