12223312000 has 64 divisors (see below), whose sum is σ = 30390249240. Its totient is φ = 4889318400.

The previous prime is 12223311973. The next prime is 12223312007. The reversal of 12223312000 is 21332221.

It can be written as a sum of positive squares in 4 ways, for example, as 8144701504 + 4078610496 = 90248^2 + 63864^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (12223312007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 365979 + ... + 397978.

Almost surely, 2^12223312000 is an apocalyptic number.

12223312000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12223312000 is an abundant number, since it is smaller than the sum of its proper divisors (18166937240).

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

12223312000 is an frugal number, since it uses more digits than its factorization.

12223312000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763986 (or 763964 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 12223312000 its reverse (21332221), we get a palindrome (12244644221).

The spelling of 12223312000 in words is "twelve billion, two hundred twenty-three million, three hundred twelve thousand".