2211110221211 has 4 divisors (see below), whose sum is σ = 2327484443400. Its totient is φ = 2094735999024.

The previous prime is 2211110221163. The next prime is 2211110221217. The reversal of 2211110221211 is 1121220111122.

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

It is a cyclic number.

It is not a de Polignac number, because 2211110221211 - 2³⁴ = 2193930352027 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2211110221211.

It is not an unprimeable number, because it can be changed into a prime (2211110221217) 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, 58187111066 + ... + 58187111103.

It is an arithmetic number, because the mean of its divisors is an integer number (581871110850).

Almost surely, 2^{2211110221211} is an apocalyptic number.

2211110221211 is a deficient number, since it is larger than the sum of its proper divisors (116374222189).

2211110221211 is a wasteful number, since it uses less digits than its factorization.

2211110221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116374222188.

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

Adding to 2211110221211 its reverse (1121220111122), we get a palindrome (3332330332333).

The spelling of 2211110221211 in words is "two trillion, two hundred eleven billion, one hundred ten million, two hundred twenty-one thousand, two hundred eleven".