221010221211 has 16 divisors (see below), whose sum is σ = 317356470816. Its totient is φ = 136002663936.

The previous prime is 221010221203. The next prime is 221010221231. The reversal of 221010221211 is 112122010122.

It is not a de Polignac number, because 221010221211 - 2³ = 221010221203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221010221231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2659161 + ... + 2741013.

It is an arithmetic number, because the mean of its divisors is an integer number (19834779426).

Almost surely, 2^221010221211 is an apocalyptic number.

221010221211 is a deficient number, since it is larger than the sum of its proper divisors (96346249605).

221010221211 is a wasteful number, since it uses less digits than its factorization.

221010221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151102.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221010221211 its reverse (112122010122), we get a palindrome (333132231333).

The spelling of 221010221211 in words is "two hundred twenty-one billion, ten million, two hundred twenty-one thousand, two hundred eleven".