2211121100211 has 4 divisors (see below), whose sum is σ = 2948161466952. Its totient is φ = 1474080733472.

The previous prime is 2211121100179. The next prime is 2211121100263. The reversal of 2211121100211 is 1120011211122.

It is a happy number.

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 2211121100211 - 2⁵ = 2211121100179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2211121100281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368520183366 + ... + 368520183371.

It is an arithmetic number, because the mean of its divisors is an integer number (737040366738).

Almost surely, 2^{2211121100211} is an apocalyptic number.

2211121100211 is a deficient number, since it is larger than the sum of its proper divisors (737040366741).

2211121100211 is an equidigital number, since it uses as much as digits as its factorization.

2211121100211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737040366740.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2211121100211 its reverse (1120011211122), we get a palindrome (3331132311333).

The spelling of 2211121100211 in words is "two trillion, two hundred eleven billion, one hundred twenty-one million, one hundred thousand, two hundred eleven".