2121112011012 has 12 divisors (see below), whose sum is σ = 4949261359056. Its totient is φ = 707037337000.

The previous prime is 2121112011001. The next prime is 2121112011043. The reversal of 2121112011012 is 2101102111212.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 2121112010982 and 2121112011000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88379667114 + ... + 88379667137.

It is an arithmetic number, because the mean of its divisors is an integer number (412438446588).

Almost surely, 2^{2121112011012} is an apocalyptic number.

It is an amenable number.

2121112011012 is an abundant number, since it is smaller than the sum of its proper divisors (2828149348044).

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

2121112011012 is a wasteful number, since it uses less digits than its factorization.

2121112011012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176759334258 (or 176759334256 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2121112011012 its reverse (2101102111212), we get a palindrome (4222214122224).

The spelling of 2121112011012 in words is "two trillion, one hundred twenty-one billion, one hundred twelve million, eleven thousand, twelve".