1121021121212 has 24 divisors (see below), whose sum is σ = 2036383695360. Its totient is φ = 539399231280.

The previous prime is 1121021121197. The next prime is 1121021121223. The reversal of 1121021121212 is 2121211201211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25230578 + ... + 25274969.

It is an arithmetic number, because the mean of its divisors is an integer number (84849320640).

Almost surely, 2^{1121021121212} is an apocalyptic number.

It is an amenable number.

1121021121212 is a deficient number, since it is larger than the sum of its proper divisors (915362574148).

1121021121212 is a wasteful number, since it uses less digits than its factorization.

1121021121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50505761 (or 50505759 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1121021121212 its reverse (2121211201211), we get a palindrome (3242232322423).

The spelling of 1121021121212 in words is "one trillion, one hundred twenty-one billion, twenty-one million, one hundred twenty-one thousand, two hundred twelve".