221133233123 has 32 divisors (see below), whose sum is σ = 255995904000. Its totient is φ = 188908394400.

The previous prime is 221133233099. The next prime is 221133233173. The reversal of 221133233123 is 321332331122.

It is not a de Polignac number, because 221133233123 - 2⁶ = 221133233059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221133233092 and 221133233101.

It is not an unprimeable number, because it can be changed into a prime (221133233173) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13758590 + ... + 13774652.

It is an arithmetic number, because the mean of its divisors is an integer number (7999872000).

Almost surely, 2^221133233123 is an apocalyptic number.

221133233123 is a deficient number, since it is larger than the sum of its proper divisors (34862670877).

221133233123 is a wasteful number, since it uses less digits than its factorization.

221133233123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16623.

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

Adding to 221133233123 its reverse (321332331122), we get a palindrome (542465564245).

The spelling of 221133233123 in words is "two hundred twenty-one billion, one hundred thirty-three million, two hundred thirty-three thousand, one hundred twenty-three".