1212211210112 has 48 divisors (see below), whose sum is σ = 2809229915520. Its totient is φ = 519519087360.

The previous prime is 1212211210097. The next prime is 1212211210139. The reversal of 1212211210112 is 2110121122121.

It is a super-2 number, since 2×1212211210112² (a number of 25 digits) contains 22 as substring.

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 5 ways as a sum of consecutive naturals, for example, 96630464 + ... + 96643007.

It is an arithmetic number, because the mean of its divisors is an integer number (58525623240).

Almost surely, 2^{1212211210112} is an apocalyptic number.

It is an amenable number.

1212211210112 is an abundant number, since it is smaller than the sum of its proper divisors (1597018705408).

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

1212211210112 is an equidigital number, since it uses as much as digits as its factorization.

1212211210112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193273499 (or 193273480 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1212211210112 its reverse (2110121122121), we get a palindrome (3322332332233).

The spelling of 1212211210112 in words is "one trillion, two hundred twelve billion, two hundred eleven million, two hundred ten thousand, one hundred twelve".