1121121202212 has 72 divisors (see below), whose sum is σ = 3128824651680. Its totient is φ = 335640510720.

The previous prime is 1121121202199. The next prime is 1121121202213. The reversal of 1121121202212 is 2122021211211.

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 (1121121202213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17022037 + ... + 17087772.

It is an arithmetic number, because the mean of its divisors is an integer number (43455897940).

Almost surely, 2^{1121121202212} is an apocalyptic number.

1121121202212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1121121202212 is an abundant number, since it is smaller than the sum of its proper divisors (2007703449468).

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

1121121202212 is a wasteful number, since it uses less digits than its factorization.

1121121202212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34109913 (or 34109908 counting only the distinct ones).

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

Adding to 1121121202212 its reverse (2122021211211), we get a palindrome (3243142413423).

The spelling of 1121121202212 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred two thousand, two hundred twelve".