221030133123 has 8 divisors (see below), whose sum is σ = 297027371008. Its totient is φ = 146193158664.

The previous prime is 221030133089. The next prime is 221030133133. The reversal of 221030133123 is 321331030122.

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

It is not a de Polignac number, because 221030133123 - 2¹⁷ = 221030002051 is a prime.

It is a super-2 number, since 2×221030133123² (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 221030133123.

It is not an unprimeable number, because it can be changed into a prime (221030133133) 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, 290065411 + ... + 290066172.

It is an arithmetic number, because the mean of its divisors is an integer number (37128421376).

Almost surely, 2^221030133123 is an apocalyptic number.

221030133123 is a deficient number, since it is larger than the sum of its proper divisors (75997237885).

221030133123 is a wasteful number, since it uses less digits than its factorization.

221030133123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580131713.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 221030133123 its reverse (321331030122), we get a palindrome (542361163245).

The spelling of 221030133123 in words is "two hundred twenty-one billion, thirty million, one hundred thirty-three thousand, one hundred twenty-three".