2101111211211 has 16 divisors (see below), whose sum is σ = 2923323561216. Its totient is φ = 1339821434336.

The previous prime is 2101111211201. The next prime is 2101111211273. The reversal of 2101111211211 is 1121121111012.

It is a cyclic number.

It is not a de Polignac number, because 2101111211211 - 2⁹ = 2101111210699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2101111211201) 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, 6909376 + ... + 7207058.

It is an arithmetic number, because the mean of its divisors is an integer number (182707722576).

Almost surely, 2^{2101111211211} is an apocalyptic number.

2101111211211 is a deficient number, since it is larger than the sum of its proper divisors (822212350005).

2101111211211 is a wasteful number, since it uses less digits than its factorization.

2101111211211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400002.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 2101111211211 its reverse (1121121111012), we get a palindrome (3222232322223).

The spelling of 2101111211211 in words is "two trillion, one hundred one billion, one hundred eleven million, two hundred eleven thousand, two hundred eleven".