1121101222212 has 144 divisors (see below), whose sum is σ = 2884712201280. Its totient is φ = 367069038336.

The previous prime is 1121101222211. The next prime is 1121101222217. The reversal of 1121101222212 is 2122221011211.

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

It is not an unprimeable number, because it can be changed into a prime (1121101222211) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 330804214 + ... + 330807602.

It is an arithmetic number, because the mean of its divisors is an integer number (20032723620).

Almost surely, 2^{1121101222212} is an apocalyptic number.

1121101222212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1121101222212 is an abundant number, since it is smaller than the sum of its proper divisors (1763610979068).

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

1121101222212 is a wasteful number, since it uses less digits than its factorization.

1121101222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4210 (or 4205 counting only the distinct ones).

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

Adding to 1121101222212 its reverse (2122221011211), we get a palindrome (3243322233423).

The spelling of 1121101222212 in words is "one trillion, one hundred twenty-one billion, one hundred one million, two hundred twenty-two thousand, two hundred twelve".