21221122201122 has 32 divisors (see below), whose sum is σ = 42550640665344. Its totient is φ = 7055649014400.

The previous prime is 21221122201093. The next prime is 21221122201171. The reversal of 21221122201122 is 22110222112212.

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 15 ways as a sum of consecutive naturals, for example, 10157172 + ... + 12066912.

It is an arithmetic number, because the mean of its divisors is an integer number (1329707520792).

Almost surely, 2^{21221122201122} is an apocalyptic number.

21221122201122 is an abundant number, since it is smaller than the sum of its proper divisors (21329518464222).

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

21221122201122 is a wasteful number, since it uses less digits than its factorization.

21221122201122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1914474.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 21221122201122 its reverse (22110222112212), we get a palindrome (43331344313334).

It can be divided in two parts, 2122112 and 2201122, that added together give a palindrome (4323234).

The spelling of 21221122201122 in words is "twenty-one trillion, two hundred twenty-one billion, one hundred twenty-two million, two hundred one thousand, one hundred twenty-two".