221020110212211 has 12 divisors (see below), whose sum is σ = 320871835132992. Its totient is φ = 146598787144656.

The previous prime is 221020110212207. The next prime is 221020110212249. The reversal of 221020110212211 is 112212011020122.

221020110212211 is a `hidden beast` number, since 2 + 210 + 20 + 1 + 10 + 212 + 211 = 666.

It is not a de Polignac number, because 221020110212211 - 2² = 221020110212207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221020110212201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62329414531 + ... + 62329418076.

It is an arithmetic number, because the mean of its divisors is an integer number (26739319594416).

Almost surely, 2^{221020110212211} is an apocalyptic number.

221020110212211 is a deficient number, since it is larger than the sum of its proper divisors (99851724920781).

221020110212211 is a wasteful number, since it uses less digits than its factorization.

221020110212211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124658832810 (or 124658832807 counting only the distinct ones).

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

Adding to 221020110212211 its reverse (112212011020122), we get a palindrome (333232121232333).

The spelling of 221020110212211 in words is "two hundred twenty-one trillion, twenty billion, one hundred ten million, two hundred twelve thousand, two hundred eleven".