1131220112212 has 24 divisors (see below), whose sum is σ = 1984495758336. Its totient is φ = 564222924768.

The previous prime is 1131220112159. The next prime is 1131220112221. The reversal of 1131220112212 is 2122110221311.

It is a self number, because there is not a number n which added to its sum of digits gives 1131220112212.

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 7 ways as a sum of consecutive naturals, for example, 2640033 + ... + 3038455.

It is an arithmetic number, because the mean of its divisors is an integer number (82687323264).

Almost surely, 2^{1131220112212} is an apocalyptic number.

It is an amenable number.

1131220112212 is a deficient number, since it is larger than the sum of its proper divisors (853275646124).

1131220112212 is a wasteful number, since it uses less digits than its factorization.

1131220112212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400167 (or 400165 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 1131220112212 its reverse (2122110221311), we get a palindrome (3253330333523).

The spelling of 1131220112212 in words is "one trillion, one hundred thirty-one billion, two hundred twenty million, one hundred twelve thousand, two hundred twelve".