2100111212211 has 16 divisors (see below), whose sum is σ = 2806240295040. Its totient is φ = 1397030120640.

The previous prime is 2100111212201. The next prime is 2100111212231. The reversal of 2100111212211 is 1122121110012.

It is a happy number.

It is not a de Polignac number, because 2100111212211 - 2⁵ = 2100111212179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2100111212201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4011360 + ... + 4504578.

It is an arithmetic number, because the mean of its divisors is an integer number (175390018440).

Almost surely, 2^{2100111212211} is an apocalyptic number.

2100111212211 is a deficient number, since it is larger than the sum of its proper divisors (706129082829).

2100111212211 is a wasteful number, since it uses less digits than its factorization.

2100111212211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496306.

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

Adding to 2100111212211 its reverse (1122121110012), we get a palindrome (3222232322223).

The spelling of 2100111212211 in words is "two trillion, one hundred billion, one hundred eleven million, two hundred twelve thousand, two hundred eleven".