21220010011182 has 128 divisors (see below), whose sum is σ = 45371581968384. Its totient is φ = 6607266398208.

The previous prime is 21220010011181. The next prime is 21220010011247. The reversal of 21220010011182 is 28111001002212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220010011181) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 114274303 + ... + 114459845.

It is an arithmetic number, because the mean of its divisors is an integer number (354465484128).

Almost surely, 2^{21220010011182} is an apocalyptic number.

21220010011182 is an abundant number, since it is smaller than the sum of its proper divisors (24151571957202).

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

21220010011182 is a wasteful number, since it uses less digits than its factorization.

21220010011182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185842.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 21220010011182 its reverse (28111001002212), we get a palindrome (49331011013394).

The spelling of 21220010011182 in words is "twenty-one trillion, two hundred twenty billion, ten million, eleven thousand, one hundred eighty-two".