1232121412 has 24 divisors (see below), whose sum is σ = 2228049152. Its totient is φ = 595576800.

The previous prime is 1232121389. The next prime is 1232121421. The reversal of 1232121412 is 2141212321.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1232121412.

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, 130987 + ... + 140077.

Almost surely, 2^1232121412 is an apocalyptic number.

It is an amenable number.

1232121412 is a deficient number, since it is larger than the sum of its proper divisors (995927740).

1232121412 is a wasteful number, since it uses less digits than its factorization.

1232121412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10219 (or 10217 counting only the distinct ones).

The product of its digits is 192, while the sum is 19.

The square root of 1232121412 is about 35101.5870296487. The cubic root of 1232121412 is about 1072.0568964845.

Adding to 1232121412 its reverse (2141212321), we get a palindrome (3373333733).

Subtracting 1232121412 from its reverse (2141212321), we obtain a palindrome (909090909).

It can be divided in two parts, 12321 and 21412, that added together give a palindrome (33733).

The spelling of 1232121412 in words is "one billion, two hundred thirty-two million, one hundred twenty-one thousand, four hundred twelve".