123234221 has 4 divisors (see below), whose sum is σ = 134437344. Its totient is φ = 112031100.

The previous prime is 123234217. The next prime is 123234227. The reversal of 123234221 is 122432321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123234221 - 2² = 123234217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123234193 and 123234202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123234227) 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, 5601545 + ... + 5601566.

It is an arithmetic number, because the mean of its divisors is an integer number (33609336).

Almost surely, 2^123234221 is an apocalyptic number.

123234221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123234221 is a deficient number, since it is larger than the sum of its proper divisors (11203123).

123234221 is a wasteful number, since it uses less digits than its factorization.

123234221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11203122.

The product of its digits is 576, while the sum is 20.

The square root of 123234221 is about 11101.0909824215. The cubic root of 123234221 is about 497.6344540341.

Adding to 123234221 its reverse (122432321), we get a palindrome (245666542).

It can be divided in two parts, 1232 and 34221, that added together give a palindrome (35453).

The spelling of 123234221 in words is "one hundred twenty-three million, two hundred thirty-four thousand, two hundred twenty-one".