123201205 has 4 divisors (see below), whose sum is σ = 147841452. Its totient is φ = 98560960.

The previous prime is 123201167. The next prime is 123201233. The reversal of 123201205 is 502102321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21150801 + 102050404 = 4599^2 + 10102^2 .

It is not a de Polignac number, because 123201205 - 2¹⁷ = 123070133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12320116 + ... + 12320125.

It is an arithmetic number, because the mean of its divisors is an integer number (36960363).

Almost surely, 2^123201205 is an apocalyptic number.

It is an amenable number.

123201205 is a deficient number, since it is larger than the sum of its proper divisors (24640247).

123201205 is an equidigital number, since it uses as much as digits as its factorization.

123201205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24640246.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 123201205 is about 11099.6038217587. The cubic root of 123201205 is about 497.5900092187.

Adding to 123201205 its reverse (502102321), we get a palindrome (625303526).

The spelling of 123201205 in words is "one hundred twenty-three million, two hundred one thousand, two hundred five".