2121110111212 has 12 divisors (see below), whose sum is σ = 3711959928936. Its totient is φ = 1060550131520.

The previous prime is 2121110111201. The next prime is 2121110111243.

2121110111212 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157858 + ... + 2065705.

It is an arithmetic number, because the mean of its divisors is an integer number (309329994078).

Almost surely, 2^{2121110111212} is an apocalyptic number.

It is an amenable number.

2121110111212 is a deficient number, since it is larger than the sum of its proper divisors (1590849817724).

2121110111212 is a wasteful number, since it uses less digits than its factorization.

2121110111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2462048 (or 2462046 counting only the distinct ones).

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

It can be divided in two parts, 2121110 and 111212, that added together give a palindrome (2232322).

The spelling of 2121110111212 in words is "two trillion, one hundred twenty-one billion, one hundred ten million, one hundred eleven thousand, two hundred twelve".