21202111000122 has 64 divisors (see below), whose sum is σ = 46559231986176. Its totient is φ = 6397167214080.

The previous prime is 21202111000097. The next prime is 21202111000129. The reversal of 21202111000122 is 22100011120212.

It is a super-2 number, since 2×21202111000122² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21202111000129) by changing a digit.

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, 9776754 + ... + 11746877.

It is an arithmetic number, because the mean of its divisors is an integer number (727487999784).

Almost surely, 2^{21202111000122} is an apocalyptic number.

21202111000122 is an abundant number, since it is smaller than the sum of its proper divisors (25357120986054).

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

21202111000122 is a wasteful number, since it uses less digits than its factorization.

21202111000122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21523895.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21202111000122 its reverse (22100011120212), we get a palindrome (43302122120334).

The spelling of 21202111000122 in words is "twenty-one trillion, two hundred two billion, one hundred eleven million, one hundred twenty-two", and thus it is an aban number.