123220532205 has 64 divisors (see below), whose sum is σ = 222204729600. Its totient is φ = 64779264000.

The previous prime is 123220532179. The next prime is 123220532209. The reversal of 123220532205 is 502235022321.

123220532205 is a `hidden beast` number, since 1 + 232 + 205 + 3 + 220 + 5 = 666.

It is not a de Polignac number, because 123220532205 - 2¹⁶ = 123220466669 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123220532209) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3268101 + ... + 3305589.

It is an arithmetic number, because the mean of its divisors is an integer number (3471948900).

Almost surely, 2^123220532205 is an apocalyptic number.

123220532205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123220532205 is a deficient number, since it is larger than the sum of its proper divisors (98984197395).

123220532205 is a wasteful number, since it uses less digits than its factorization.

123220532205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37851 (or 37845 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 123220532205 its reverse (502235022321), we get a palindrome (625455554526).

The spelling of 123220532205 in words is "one hundred twenty-three billion, two hundred twenty million, five hundred thirty-two thousand, two hundred five".