1121211312212 has 24 divisors (see below), whose sum is σ = 1973568181032. Its totient is φ = 557335040000.

The previous prime is 1121211312209. The next prime is 1121211312227. The reversal of 1121211312212 is 2122131121211.

It can be written as a sum of positive squares in 4 ways, for example, as 703189582096 + 418021730116 = 838564^2 + 646546^2 .

It is a super-2 number, since 2×1121211312212² (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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18349712 + ... + 18410712.

It is an arithmetic number, because the mean of its divisors is an integer number (82232007543).

Almost surely, 2^{1121211312212} is an apocalyptic number.

It is an amenable number.

1121211312212 is a deficient number, since it is larger than the sum of its proper divisors (852356868820).

1121211312212 is a wasteful number, since it uses less digits than its factorization.

1121211312212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87739 (or 87737 counting only the distinct ones).

The product of its digits is 96, while the sum is 20.

Adding to 1121211312212 its reverse (2122131121211), we get a palindrome (3243342433423).

The spelling of 1121211312212 in words is "one trillion, one hundred twenty-one billion, two hundred eleven million, three hundred twelve thousand, two hundred twelve".