221333110123231 has 16 divisors (see below), whose sum is σ = 230239908426528. Its totient is φ = 212603740761600.

The previous prime is 221333110123219. The next prime is 221333110123283. The reversal of 221333110123231 is 132321011333122.

It is a cyclic number.

It is not a de Polignac number, because 221333110123231 - 2²⁹ = 221332573252319 is a prime.

It is a super-2 number, since 2×221333110123231² (a number of 29 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 221333110123231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221333110123211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63046036 + ... + 66464041.

It is an arithmetic number, because the mean of its divisors is an integer number (14389994276658).

Almost surely, 2^{221333110123231} is an apocalyptic number.

221333110123231 is a deficient number, since it is larger than the sum of its proper divisors (8906798303297).

221333110123231 is a wasteful number, since it uses less digits than its factorization.

221333110123231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129510762.

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 221333110123231 its reverse (132321011333122), we get a palindrome (353654121456353).

The spelling of 221333110123231 in words is "two hundred twenty-one trillion, three hundred thirty-three billion, one hundred ten million, one hundred twenty-three thousand, two hundred thirty-one".