21202121201122 has 64 divisors (see below), whose sum is σ = 34924629358080. Its totient is φ = 9613669165056.

The previous prime is 21202121201101. The next prime is 21202121201153. The reversal of 21202121201122 is 22110212120212.

It is a self number, because there is not a number n which added to its sum of digits gives 21202121201122.

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 31 ways as a sum of consecutive naturals, for example, 181204254 + ... + 181321222.

It is an arithmetic number, because the mean of its divisors is an integer number (545697333720).

Almost surely, 2^{21202121201122} is an apocalyptic number.

21202121201122 is a deficient number, since it is larger than the sum of its proper divisors (13722508156958).

21202121201122 is a wasteful number, since it uses less digits than its factorization.

21202121201122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118795.

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

Adding to 21202121201122 its reverse (22110212120212), we get a palindrome (43312333321334).

The spelling of 21202121201122 in words is "twenty-one trillion, two hundred two billion, one hundred twenty-one million, two hundred one thousand, one hundred twenty-two".