123224313220 has 12 divisors (see below), whose sum is σ = 258771057804. Its totient is φ = 49289725280.

The previous prime is 123224313217. The next prime is 123224313239. The reversal of 123224313220 is 22313422321.

It can be written as a sum of positive squares in 2 ways, for example, as 30292010116 + 92932303104 = 174046^2 + 304848^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3080607811 + ... + 3080607850.

It is an arithmetic number, because the mean of its divisors is an integer number (21564254817).

Almost surely, 2^123224313220 is an apocalyptic number.

123224313220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123224313220 is an abundant number, since it is smaller than the sum of its proper divisors (135546744584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123224313220 is a wasteful number, since it uses less digits than its factorization.

123224313220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6161215670 (or 6161215668 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 123224313220 its reverse (22313422321), we get a palindrome (145537735541).

The spelling of 123224313220 in words is "one hundred twenty-three billion, two hundred twenty-four million, three hundred thirteen thousand, two hundred twenty".