123222001312 has 36 divisors (see below), whose sum is σ = 251247114846. Its totient is φ = 59486470400.

The previous prime is 123222001307. The next prime is 123222001387. The reversal of 123222001312 is 213100222321.

It can be written as a sum of positive squares in 3 ways, for example, as 114788150416 + 8433850896 = 338804^2 + 91836^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 123222001312.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2262439 + ... + 2316262.

Almost surely, 2^123222001312 is an apocalyptic number.

It is an amenable number.

123222001312 is an abundant number, since it is smaller than the sum of its proper divisors (128025113534).

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

123222001312 is an equidigital number, since it uses as much as digits as its factorization.

123222001312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4578769 (or 4578732 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 123222001312 its reverse (213100222321), we get a palindrome (336322223633).

The spelling of 123222001312 in words is "one hundred twenty-three billion, two hundred twenty-two million, one thousand, three hundred twelve".