2221211021211 has 48 divisors (see below), whose sum is σ = 4055544502464. Its totient is φ = 1139962159872.

The previous prime is 2221211021179. The next prime is 2221211021231. The reversal of 2221211021211 is 1121201121222.

2221211021211 is a `hidden beast` number, since 2 + 221 + 211 + 0 + 21 + 211 = 666.

It is not a de Polignac number, because 2221211021211 - 2⁵ = 2221211021179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2221211021231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36619716 + ... + 36680321.

It is an arithmetic number, because the mean of its divisors is an integer number (84490510468).

Almost surely, 2^{2221211021211} is an apocalyptic number.

2221211021211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2221211021211 is a deficient number, since it is larger than the sum of its proper divisors (1834333481253).

2221211021211 is a wasteful number, since it uses less digits than its factorization.

2221211021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73300100 (or 73300097 counting only the distinct ones).

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

Adding to 2221211021211 its reverse (1121201121222), we get a palindrome (3342412142433).

The spelling of 2221211021211 in words is "two trillion, two hundred twenty-one billion, two hundred eleven million, twenty-one thousand, two hundred eleven".