1212201112 has 16 divisors (see below), whose sum is σ = 2276718840. Its totient is φ = 605076096.

The previous prime is 1212201103. The next prime is 1212201113. The reversal of 1212201112 is 2111022121.

It is a junction number, because it is equal to n+sod(n) for n = 1212201092 and 1212201101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212201113) 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, 123018 + ... + 132505.

Almost surely, 2^1212201112 is an apocalyptic number.

It is an amenable number.

1212201112 is a deficient number, since it is larger than the sum of its proper divisors (1064517728).

1212201112 is a wasteful number, since it uses less digits than its factorization.

1212201112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256122 (or 256118 counting only the distinct ones).

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

The square root of 1212201112 is about 34816.6786468784. The cubic root of 1212201112 is about 1066.2479913304.

Adding to 1212201112 its reverse (2111022121), we get a palindrome (3323223233).

The spelling of 1212201112 in words is "one billion, two hundred twelve million, two hundred one thousand, one hundred twelve".