21211202201122 has 16 divisors (see below), whose sum is σ = 32254827892992. Its totient is φ = 10459612524960.

The previous prime is 21211202201113. The next prime is 21211202201183. The reversal of 21211202201122 is 22110220211212.

It is a self number, because there is not a number n which added to its sum of digits gives 21211202201122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2732598 + ... + 7063249.

It is an arithmetic number, because the mean of its divisors is an integer number (2015926743312).

Almost surely, 2^{21211202201122} is an apocalyptic number.

21211202201122 is a deficient number, since it is larger than the sum of its proper divisors (11043625691870).

21211202201122 is a wasteful number, since it uses less digits than its factorization.

21211202201122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9810753.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 21211202201122 its reverse (22110220211212), we get a palindrome (43321422412334).

The spelling of 21211202201122 in words is "twenty-one trillion, two hundred eleven billion, two hundred two million, two hundred one thousand, one hundred twenty-two".