2211201101111 has 4 divisors (see below), whose sum is σ = 2211258995400. Its totient is φ = 2211143206824.

The previous prime is 2211201101071. The next prime is 2211201101117. The reversal of 2211201101111 is 1111011021122.

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-2211201101111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211201101117) 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, 28889816 + ... + 28966253.

It is an arithmetic number, because the mean of its divisors is an integer number (552814748850).

Almost surely, 2^{2211201101111} is an apocalyptic number.

2211201101111 is a deficient number, since it is larger than the sum of its proper divisors (57894289).

2211201101111 is an equidigital number, since it uses as much as digits as its factorization.

2211201101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57894288.

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

Adding to 2211201101111 its reverse (1111011021122), we get a palindrome (3322212122233).

It can be divided in two parts, 221120 and 1101111, that added together give a palindrome (1322231).

The spelling of 2211201101111 in words is "two trillion, two hundred eleven billion, two hundred one million, one hundred one thousand, one hundred eleven".