1121221000212 has 48 divisors (see below), whose sum is σ = 2702421305472. Its totient is φ = 361537257600.

The previous prime is 1121221000171. The next prime is 1121221000283. The reversal of 1121221000212 is 2120001221211.

It is a junction number, because it is equal to n+sod(n) for n = 1121221000191 and 1121221000200.

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 15 ways as a sum of consecutive naturals, for example, 7221664 + ... + 7375287.

It is an arithmetic number, because the mean of its divisors is an integer number (56300443864).

Almost surely, 2^{1121221000212} is an apocalyptic number.

1121221000212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1121221000212 is an abundant number, since it is smaller than the sum of its proper divisors (1581200305260).

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

1121221000212 is a wasteful number, since it uses less digits than its factorization.

1121221000212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14597168 (or 14597166 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1121221000212 its reverse (2120001221211), we get a palindrome (3241222221423).

The spelling of 1121221000212 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-one million, two hundred twelve", and thus it is an aban number.