1232111212 has 12 divisors (see below), whose sum is σ = 2159471160. Its totient is φ = 615119456.

The previous prime is 1232111161. The next prime is 1232111233. The reversal of 1232111212 is 2121112321.

It is a super-2 number, since 2×1232111212² = 3036196077472217888, which 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 3 ways as a sum of consecutive naturals, for example, 231073 + ... + 236344.

It is an arithmetic number, because the mean of its divisors is an integer number (179955930).

Almost surely, 2^1232111212 is an apocalyptic number.

It is an amenable number.

1232111212 is a deficient number, since it is larger than the sum of its proper divisors (927359948).

1232111212 is a wasteful number, since it uses less digits than its factorization.

1232111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468080 (or 468078 counting only the distinct ones).

The product of its digits is 48, while the sum is 16.

The square root of 1232111212 is about 35101.4417367720. The cubic root of 1232111212 is about 1072.0539381693.

Adding to 1232111212 its reverse (2121112321), we get a palindrome (3353223533).

The spelling of 1232111212 in words is "one billion, two hundred thirty-two million, one hundred eleven thousand, two hundred twelve".