12123203221320 has 128 divisors (see below), whose sum is σ = 36462766947840. Its totient is φ = 3224577182720.

The previous prime is 12123203221307. The next prime is 12123203221447. The reversal of 12123203221320 is 2312230232121.

It is a super-4 number, since 4×12123203221320⁴ (a number of 53 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 233593294 + ... + 233645186.

It is an arithmetic number, because the mean of its divisors is an integer number (284865366780).

Almost surely, 2^{12123203221320} is an apocalyptic number.

12123203221320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12123203221320 is an abundant number, since it is smaller than the sum of its proper divisors (24339563726520).

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

12123203221320 is a wasteful number, since it uses less digits than its factorization.

12123203221320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56855 (or 56851 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 12123203221320 its reverse (2312230232121), we get a palindrome (14435433453441).

The spelling of 12123203221320 in words is "twelve trillion, one hundred twenty-three billion, two hundred three million, two hundred twenty-one thousand, three hundred twenty".