123220205 has 8 divisors (see below), whose sum is σ = 148012800. Its totient is φ = 98477136.

The previous prime is 123220193. The next prime is 123220219. The reversal of 123220205 is 502022321.

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 123220205 - 2¹⁰ = 123219181 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6665 + ... + 17054.

It is an arithmetic number, because the mean of its divisors is an integer number (18501600).

Almost surely, 2^123220205 is an apocalyptic number.

It is an amenable number.

123220205 is a deficient number, since it is larger than the sum of its proper divisors (24792595).

123220205 is a wasteful number, since it uses less digits than its factorization.

123220205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24763.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 123220205 is about 11100.4596751666. The cubic root of 123220205 is about 497.6155872267.

Adding to 123220205 its reverse (502022321), we get a palindrome (625242526).

The spelling of 123220205 in words is "one hundred twenty-three million, two hundred twenty thousand, two hundred five".