1123210123312 has 40 divisors (see below), whose sum is σ = 2181043748016. Its totient is φ = 560361010176.

The previous prime is 1123210123307. The next prime is 1123210123369. The reversal of 1123210123312 is 2133210123211.

It is a super-2 number, since 2×1123210123312² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21385788 + ... + 21438244.

Almost surely, 2^{1123210123312} is an apocalyptic number.

It is an amenable number.

1123210123312 is a deficient number, since it is larger than the sum of its proper divisors (1057833624704).

1123210123312 is a wasteful number, since it uses less digits than its factorization.

1123210123312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55405 (or 55399 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1123210123312 its reverse (2133210123211), we get a palindrome (3256420246523).

The spelling of 1123210123312 in words is "one trillion, one hundred twenty-three billion, two hundred ten million, one hundred twenty-three thousand, three hundred twelve".