2111201211111 has 16 divisors (see below), whose sum is σ = 2842402168320. Its totient is φ = 1393735188960.

The previous prime is 2111201211071. The next prime is 2111201211113. The reversal of 2111201211111 is 1111121021112.

It is not a de Polignac number, because 2111201211111 - 2¹⁰ = 2111201210087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111201211113) 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, 6677166 + ... + 6986196.

It is an arithmetic number, because the mean of its divisors is an integer number (177650135520).

Almost surely, 2^{2111201211111} is an apocalyptic number.

2111201211111 is a deficient number, since it is larger than the sum of its proper divisors (731200957209).

2111201211111 is a wasteful number, since it uses less digits than its factorization.

2111201211111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331246.

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

Adding to 2111201211111 its reverse (1111121021112), we get a palindrome (3222322232223).

The spelling of 2111201211111 in words is "two trillion, one hundred eleven billion, two hundred one million, two hundred eleven thousand, one hundred eleven".