123233202121 has 8 divisors (see below), whose sum is σ = 125597657160. Its totient is φ = 120870202752.

The previous prime is 123233202091. The next prime is 123233202149. The reversal of 123233202121 is 121202332321.

It can be written as a sum of positive squares in 4 ways, for example, as 62502500025 + 60730702096 = 250005^2 + 246436^2 .

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 123233202121 - 2⁵ = 123233202089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123233202092 and 123233202101.

It is not an unprimeable number, because it can be changed into a prime (123233202221) 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, 192210 + ... + 532363.

It is an arithmetic number, because the mean of its divisors is an integer number (15699707145).

Almost surely, 2^123233202121 is an apocalyptic number.

It is an amenable number.

123233202121 is a deficient number, since it is larger than the sum of its proper divisors (2364455039).

123233202121 is an equidigital number, since it uses as much as digits as its factorization.

123233202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727835.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 123233202121 its reverse (121202332321), we get a palindrome (244435534442).

The spelling of 123233202121 in words is "one hundred twenty-three billion, two hundred thirty-three million, two hundred two thousand, one hundred twenty-one".