21202112001122 has 16 divisors (see below), whose sum is σ = 36052174253760. Its totient is φ = 9270559093392.

The previous prime is 21202112001097. The next prime is 21202112001127. The reversal of 21202112001122 is 22110021120212.

It is a self number, because there is not a number n which added to its sum of digits gives 21202112001122.

It is not an unprimeable number, because it can be changed into a prime (21202112001127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21459627038 + ... + 21459628025.

It is an arithmetic number, because the mean of its divisors is an integer number (2253260890860).

Almost surely, 2^{21202112001122} is an apocalyptic number.

21202112001122 is a deficient number, since it is larger than the sum of its proper divisors (14850062252638).

21202112001122 is a wasteful number, since it uses less digits than its factorization.

21202112001122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42919255097.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21202112001122 its reverse (22110021120212), we get a palindrome (43312133121334).

The spelling of 21202112001122 in words is "twenty-one trillion, two hundred two billion, one hundred twelve million, one thousand, one hundred twenty-two".