221213021133222 has 64 divisors (see below), whose sum is σ = 500949155358720. Its totient is φ = 73249344527400.

The previous prime is 221213021133163. The next prime is 221213021133277. The reversal of 221213021133222 is 222331120312122.

221213021133222 is a `hidden beast` number, since 2 + 2 + 1 + 2 + 1 + 302 + 1 + 1 + 332 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 166804878 + ... + 168125825.

It is an arithmetic number, because the mean of its divisors is an integer number (7827330552480).

Almost surely, 2^{221213021133222} is an apocalyptic number.

221213021133222 is an abundant number, since it is smaller than the sum of its proper divisors (279736134225498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221213021133222 is an equidigital number, since it uses as much as digits as its factorization.

221213021133222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334930877 (or 334930859 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 221213021133222 its reverse (222331120312122), we get a palindrome (443544141445344).

The spelling of 221213021133222 in words is "two hundred twenty-one trillion, two hundred thirteen billion, twenty-one million, one hundred thirty-three thousand, two hundred twenty-two".