1212012112 has 20 divisors (see below), whose sum is σ = 2370223296. Its totient is φ = 600341600.

The previous prime is 1212012107. The next prime is 1212012119. The reversal of 1212012112 is 2112102121.

It is a junction number, because it is equal to n+sod(n) for n = 1212012092 and 1212012101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212012119) 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, 352264 + ... + 355687.

Almost surely, 2^1212012112 is an apocalyptic number.

It is an amenable number.

1212012112 is a deficient number, since it is larger than the sum of its proper divisors (1158211184).

1212012112 is a wasteful number, since it uses less digits than its factorization.

1212012112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708066 (or 708060 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1212012112 is about 34813.9643246787. The cubic root of 1212012112 is about 1066.1925738636.

Adding to 1212012112 its reverse (2112102121), we get a palindrome (3324114233).

Subtracting 1212012112 from its reverse (2112102121), we obtain a palindrome (900090009).

The spelling of 1212012112 in words is "one billion, two hundred twelve million, twelve thousand, one hundred twelve".