2011221221211 has 12 divisors (see below), whose sum is σ = 2983613463792. Its totient is φ = 1304575927056.

The previous prime is 2011221221201. The next prime is 2011221221227. The reversal of 2011221221211 is 1121221221102.

2011221221211 is a `hidden beast` number, since 2 + 0 + 11 + 221 + 221 + 211 = 666.

It is not a de Polignac number, because 2011221221211 - 2¹³ = 2011221213019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2011221221201) 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, 3019851351 + ... + 3019852016.

It is an arithmetic number, because the mean of its divisors is an integer number (248634455316).

Almost surely, 2^{2011221221211} is an apocalyptic number.

2011221221211 is a deficient number, since it is larger than the sum of its proper divisors (972392242581).

2011221221211 is a wasteful number, since it uses less digits than its factorization.

2011221221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6039703410 (or 6039703407 counting only the distinct ones).

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

Adding to 2011221221211 its reverse (1121221221102), we get a palindrome (3132442442313).

The spelling of 2011221221211 in words is "two trillion, eleven billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred eleven".