123033200221 has 4 divisors (see below), whose sum is σ = 123426277852. Its totient is φ = 122640122592.

The previous prime is 123033200203. The next prime is 123033200233. The reversal of 123033200221 is 122002330321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122002330321 = 96847 ⋅1259743.

It can be written as a sum of positive squares in 2 ways, for example, as 19422603225 + 103610596996 = 139365^2 + 321886^2 .

It is a cyclic number.

It is not a de Polignac number, because 123033200221 - 2²⁵ = 122999645789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123033200291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196538346 + ... + 196538971.

It is an arithmetic number, because the mean of its divisors is an integer number (30856569463).

Almost surely, 2^123033200221 is an apocalyptic number.

It is an amenable number.

123033200221 is a deficient number, since it is larger than the sum of its proper divisors (393077631).

123033200221 is an equidigital number, since it uses as much as digits as its factorization.

123033200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393077630.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 123033200221 its reverse (122002330321), we get a palindrome (245035530542).

The spelling of 123033200221 in words is "one hundred twenty-three billion, thirty-three million, two hundred thousand, two hundred twenty-one".