2111102111012 has 6 divisors (see below), whose sum is σ = 3694428694278. Its totient is φ = 1055551055504.

The previous prime is 2111102111011. The next prime is 2111102111017. The reversal of 2111102111012 is 2101112011112.

It can be written as a sum of positive squares in only one way, i.e., 1980482031616 + 130620079396 = 1407296^2 + 361414^2 .

It is not an unprimeable number, because it can be changed into a prime (2111102111011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263887763873 + ... + 263887763880.

It is an arithmetic number, because the mean of its divisors is an integer number (615738115713).

Almost surely, 2^{2111102111012} is an apocalyptic number.

It is an amenable number.

2111102111012 is a deficient number, since it is larger than the sum of its proper divisors (1583326583266).

2111102111012 is a wasteful number, since it uses less digits than its factorization.

2111102111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527775527757 (or 527775527755 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 2111102111012 its reverse (2101112011112), we get a palindrome (4212214122124).

The spelling of 2111102111012 in words is "two trillion, one hundred eleven billion, one hundred two million, one hundred eleven thousand, twelve".