11121212021012 has 12 divisors (see below), whose sum is σ = 19610686847136. Its totient is φ = 5518158636120.

The previous prime is 11121212020999. The next prime is 11121212021041. The reversal of 11121212021012 is 21012021212111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10611843008 + ... + 10611844055.

It is an arithmetic number, because the mean of its divisors is an integer number (1634223903928).

Almost surely, 2^{11121212021012} is an apocalyptic number.

It is an amenable number.

11121212021012 is a deficient number, since it is larger than the sum of its proper divisors (8489474826124).

11121212021012 is a wasteful number, since it uses less digits than its factorization.

11121212021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21223687198 (or 21223687196 counting only the distinct ones).

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

Adding to 11121212021012 its reverse (21012021212111), we get a palindrome (32133233233123).

The spelling of 11121212021012 in words is "eleven trillion, one hundred twenty-one billion, two hundred twelve million, twenty-one thousand, twelve".