121326312 has 64 divisors (see below), whose sum is σ = 314703360. Its totient is φ = 38937600.

The previous prime is 121326307. The next prime is 121326323. The reversal of 121326312 is 213623121.

121326312 is nontrivially palindromic in base 5.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232612 + ... + 233132.

It is an arithmetic number, because the mean of its divisors is an integer number (4917240).

Almost surely, 2^121326312 is an apocalyptic number.

121326312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121326312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157351680).

121326312 is an abundant number, since it is smaller than the sum of its proper divisors (193377048).

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

121326312 is a wasteful number, since it uses less digits than its factorization.

121326312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874 (or 870 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

The square root of 121326312 is about 11014.8223771425. The cubic root of 121326312 is about 495.0529644378.

Adding to 121326312 its reverse (213623121), we get a palindrome (334949433).

The spelling of 121326312 in words is "one hundred twenty-one million, three hundred twenty-six thousand, three hundred twelve".