1232121212 has 12 divisors (see below), whose sum is σ = 2464242480. Its totient is φ = 528051936.

The previous prime is 1232121211. The next prime is 1232121221. The reversal of 1232121212 is 2121212321.

1232121212 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

1232121212 is an admirable number.

It is an alternating number because its digits alternate between odd and even.

1232121212 is a modest number, since divided by 121212 gives 1232 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232121211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22002137 + ... + 22002192.

It is an arithmetic number, because the mean of its divisors is an integer number (205353540).

Almost surely, 2^1232121212 is an apocalyptic number.

It is an amenable number.

1232121212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1232121212 is a wasteful number, since it uses less digits than its factorization.

1232121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44004340 (or 44004338 counting only the distinct ones).

The product of its digits is 96, while the sum is 17.

The square root of 1232121212 is about 35101.5841807745. The cubic root of 1232121212 is about 1072.0568384785.

Adding to 1232121212 its reverse (2121212321), we get a palindrome (3353333533).

It can be divided in two parts, 12321 and 21212, that added together give a palindrome (33533).

The spelling of 1232121212 in words is "one billion, two hundred thirty-two million, one hundred twenty-one thousand, two hundred twelve".