21202222111122 has 16 divisors (see below), whose sum is σ = 45666324547200. Its totient is φ = 6523760649552.

The previous prime is 21202222111069. The next prime is 21202222111171. The reversal of 21202222111122 is 22111122220212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135911680122 + ... + 135911680277.

It is an arithmetic number, because the mean of its divisors is an integer number (2854145284200).

Almost surely, 2^{21202222111122} is an apocalyptic number.

21202222111122 is an abundant number, since it is smaller than the sum of its proper divisors (24464102436078).

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

21202222111122 is a wasteful number, since it uses less digits than its factorization.

21202222111122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271823360417.

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

Adding to 21202222111122 its reverse (22111122220212), we get a palindrome (43313344331334).

The spelling of 21202222111122 in words is "twenty-one trillion, two hundred two billion, two hundred twenty-two million, one hundred eleven thousand, one hundred twenty-two".