2100212211011 has 4 divisors (see below), whose sum is σ = 2100789671952. Its totient is φ = 2099634750072.

The previous prime is 2100212211001. The next prime is 2100212211047. The reversal of 2100212211011 is 1101122120012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2100212211011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2100212211001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288725015 + ... + 288732288.

It is an arithmetic number, because the mean of its divisors is an integer number (525197417988).

Almost surely, 2^{2100212211011} is an apocalyptic number.

2100212211011 is a deficient number, since it is larger than the sum of its proper divisors (577460941).

2100212211011 is an equidigital number, since it uses as much as digits as its factorization.

2100212211011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577460940.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2100212211011 its reverse (1101122120012), we get a palindrome (3201334331023).

Subtracting from 2100212211011 its reverse (1101122120012), we obtain a palindrome (999090090999).

The spelling of 2100212211011 in words is "two trillion, one hundred billion, two hundred twelve million, two hundred eleven thousand, eleven".