1210212220112 has 80 divisors (see below), whose sum is σ = 2724113395584. Its totient is φ = 510079680000.

The previous prime is 1210212220111. The next prime is 1210212220117. The reversal of 1210212220112 is 2110222120121.

It is a super-3 number, since 3×1210212220112³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210212220111) by changing a digit.

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, 67634687 + ... + 67652577.

Almost surely, 2^{1210212220112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1210212220112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1362056697792).

1210212220112 is an abundant number, since it is smaller than the sum of its proper divisors (1513901175472).

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

1210212220112 is a wasteful number, since it uses less digits than its factorization.

1210212220112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27868 (or 27862 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1210212220112 its reverse (2110222120121), we get a palindrome (3320434340233).

Subtracting 1210212220112 from its reverse (2110222120121), we obtain a palindrome (900009900009).

The spelling of 1210212220112 in words is "one trillion, two hundred ten billion, two hundred twelve million, two hundred twenty thousand, one hundred twelve".