1121221011212 has 48 divisors (see below), whose sum is σ = 2078745016320. Its totient is φ = 528523881600.

The previous prime is 1121221011199. The next prime is 1121221011221. The reversal of 1121221011212 is 2121101221211.

It is a super-3 number, since 3×1121221011212³ (a number of 37 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311714 + ... + 1529577.

It is an arithmetic number, because the mean of its divisors is an integer number (43307187840).

Almost surely, 2^{1121221011212} is an apocalyptic number.

It is an amenable number.

1121221011212 is a deficient number, since it is larger than the sum of its proper divisors (957524005108).

1121221011212 is a wasteful number, since it uses less digits than its factorization.

1121221011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1841462 (or 1841460 counting only the distinct ones).

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

Adding to 1121221011212 its reverse (2121101221211), we get a palindrome (3242322232423).

The spelling of 1121221011212 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-one million, eleven thousand, two hundred twelve".