2211121220211 has 12 divisors (see below), whose sum is σ = 3200191355088. Its totient is φ = 1471150232304.

The previous prime is 2211121220177. The next prime is 2211121220233. The reversal of 2211121220211 is 1120221211122.

2211121220211 is a `hidden beast` number, since 2 + 211 + 1 + 21 + 220 + 211 = 666.

It is not a de Polignac number, because 2211121220211 - 2¹⁷ = 2211121089139 is a prime.

It is a super-3 number, since 3×2211121220211³ (a number of 38 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2211121220281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 244210320 + ... + 244219373.

It is an arithmetic number, because the mean of its divisors is an integer number (266682612924).

Almost surely, 2^{2211121220211} is an apocalyptic number.

2211121220211 is a deficient number, since it is larger than the sum of its proper divisors (989070134877).

2211121220211 is a wasteful number, since it uses less digits than its factorization.

2211121220211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488430202 (or 488430199 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2211121220211 its reverse (1120221211122), we get a palindrome (3331342431333).

The spelling of 2211121220211 in words is "two trillion, two hundred eleven billion, one hundred twenty-one million, two hundred twenty thousand, two hundred eleven".