1112121212 has 12 divisors (see below), whose sum is σ = 1991473176. Its totient is φ = 543128880.

The previous prime is 1112121211. The next prime is 1112121217. The reversal of 1112121212 is 2121212111.

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

1112121212 is a modest number, since divided by 121212 gives 1112 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112121211) 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, 3232739 + ... + 3233082.

It is an arithmetic number, because the mean of its divisors is an integer number (165956098).

Almost surely, 2^1112121212 is an apocalyptic number.

It is an amenable number.

1112121212 is a deficient number, since it is larger than the sum of its proper divisors (879351964).

1112121212 is a wasteful number, since it uses less digits than its factorization.

1112121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6465868 (or 6465866 counting only the distinct ones).

The product of its digits is 16, while the sum is 14.

The square root of 1112121212 is about 33348.4814047057. The cubic root of 1112121212 is about 1036.0579354213.

Adding to 1112121212 its reverse (2121212111), we get a palindrome (3233333323).

It can be divided in two parts, 111 and 2121212, that multiplied together give a palindrome (235454532).

The spelling of 1112121212 in words is "one billion, one hundred twelve million, one hundred twenty-one thousand, two hundred twelve".