121223312 has 20 divisors (see below), whose sum is σ = 268423296. Its totient is φ = 51952800.

The previous prime is 121223279. The next prime is 121223351. The reversal of 121223312 is 213322121.

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 3 ways as a sum of consecutive naturals, for example, 541064 + ... + 541287.

Almost surely, 2^121223312 is an apocalyptic number.

It is an amenable number.

121223312 is an abundant number, since it is smaller than the sum of its proper divisors (147199984).

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

121223312 is a wasteful number, since it uses less digits than its factorization.

121223312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082366 (or 1082360 counting only the distinct ones).

The product of its digits is 144, while the sum is 17.

The square root of 121223312 is about 11010.1458664270. The cubic root of 121223312 is about 494.9128330000.

Adding to 121223312 its reverse (213322121), we get a palindrome (334545433).

The spelling of 121223312 in words is "one hundred twenty-one million, two hundred twenty-three thousand, three hundred twelve".