2211201122111 has 2 divisors, whose sum is σ = 2211201122112. Its totient is φ = 2211201122110.

The previous prime is 2211201122101. The next prime is 2211201122159. The reversal of 2211201122111 is 1112211021122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2211201122111 - 2⁶ = 2211201122047 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2211201122111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2211201122101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105600561055 + 1105600561056.

It is an arithmetic number, because the mean of its divisors is an integer number (1105600561056).

Almost surely, 2^{2211201122111} is an apocalyptic number.

2211201122111 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211201122111 is an equidigital number, since it uses as much as digits as its factorization.

2211201122111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 2211201122111 its reverse (1112211021122), we get a palindrome (3323412143233).

The spelling of 2211201122111 in words is "two trillion, two hundred eleven billion, two hundred one million, one hundred twenty-two thousand, one hundred eleven".