1211212011112 has 32 divisors (see below), whose sum is σ = 2276020454400. Its totient is φ = 604273512384.

The previous prime is 1211212011071. The next prime is 1211212011161. The reversal of 1211212011112 is 2111102121121.

It is a super-2 number, since 2×1211212011112² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63130273 + ... + 63149455.

It is an arithmetic number, because the mean of its divisors is an integer number (71125639200).

Almost surely, 2^{1211212011112} is an apocalyptic number.

It is an amenable number.

1211212011112 is a deficient number, since it is larger than the sum of its proper divisors (1064808443288).

1211212011112 is a wasteful number, since it uses less digits than its factorization.

1211212011112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36145 (or 36141 counting only the distinct ones).

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

Adding to 1211212011112 its reverse (2111102121121), we get a palindrome (3322314132233).

The spelling of 1211212011112 in words is "one trillion, two hundred eleven billion, two hundred twelve million, eleven thousand, one hundred twelve".