1121210212212 has 48 divisors (see below), whose sum is σ = 2918902940800. Its totient is φ = 372185953920.

The previous prime is 1121210212201. The next prime is 1121210212237. The reversal of 1121210212212 is 2122120121211.

1121210212212 is a `hidden beast` number, since 11 + 21 + 210 + 212 + 212 = 666.

It is a super-2 number, since 2×1121210212212² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21512512 + ... + 21564567.

Almost surely, 2^{1121210212212} is an apocalyptic number.

1121210212212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1121210212212 is an abundant number, since it is smaller than the sum of its proper divisors (1797692728588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1121210212212 is a wasteful number, since it uses less digits than its factorization.

1121210212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43077333 (or 43077325 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1121210212212 its reverse (2122120121211), we get a palindrome (3243330333423).

The spelling of 1121210212212 in words is "one trillion, one hundred twenty-one billion, two hundred ten million, two hundred twelve thousand, two hundred twelve".