2221221011211 has 24 divisors (see below), whose sum is σ = 3488976732384. Its totient is φ = 1356039532800.

The previous prime is 2221221011201. The next prime is 2221221011227. The reversal of 2221221011211 is 1121101221222.

2221221011211 is a `hidden beast` number, since 2 + 221 + 221 + 0 + 11 + 211 = 666.

It is not a de Polignac number, because 2221221011211 - 2¹⁴ = 2221220994827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2221221011201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 196180615 + ... + 196191936.

It is an arithmetic number, because the mean of its divisors is an integer number (145374030516).

Almost surely, 2^{2221221011211} is an apocalyptic number.

2221221011211 is a deficient number, since it is larger than the sum of its proper divisors (1267755721173).

2221221011211 is a wasteful number, since it uses less digits than its factorization.

2221221011211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392372611 (or 392372608 counting only the distinct ones).

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

Adding to 2221221011211 its reverse (1121101221222), we get a palindrome (3342322232433).

It can be divided in two parts, 2221221011 and 211, that added together give a palindrome (2221221222).

The spelling of 2221221011211 in words is "two trillion, two hundred twenty-one billion, two hundred twenty-one million, eleven thousand, two hundred eleven".