221223123133 has 8 divisors (see below), whose sum is σ = 223965995000. Its totient is φ = 218493220608.

The previous prime is 221223123109. The next prime is 221223123137. The reversal of 221223123133 is 331321322122.

It can be written as a sum of positive squares in 4 ways, for example, as 2463931044 + 218759192089 = 49638^2 + 467717^2 .

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 221223123133 - 2¹⁷ = 221222992061 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221223123098 and 221223123107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221223123137) 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, 3208008 + ... + 3276241.

It is an arithmetic number, because the mean of its divisors is an integer number (27995749375).

Almost surely, 2^221223123133 is an apocalyptic number.

It is an amenable number.

221223123133 is a deficient number, since it is larger than the sum of its proper divisors (2742871867).

221223123133 is a wasteful number, since it uses less digits than its factorization.

221223123133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6484671.

The product of its digits is 2592, while the sum is 25.

Adding to 221223123133 its reverse (331321322122), we get a palindrome (552544445255).

The spelling of 221223123133 in words is "two hundred twenty-one billion, two hundred twenty-three million, one hundred twenty-three thousand, one hundred thirty-three".