21022122202012 has 6 divisors (see below), whose sum is σ = 36788713853528. Its totient is φ = 10511061101004.

The previous prime is 21022122202007. The next prime is 21022122202019. The reversal of 21022122202012 is 21020222122012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022122202019) 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 as a sum of consecutive naturals, namely, 2627765275248 + ... + 2627765275255.

Almost surely, 2^{21022122202012} is an apocalyptic number.

It is an amenable number.

21022122202012 is a deficient number, since it is larger than the sum of its proper divisors (15766591651516).

21022122202012 is a wasteful number, since it uses less digits than its factorization.

21022122202012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5255530550507 (or 5255530550505 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 21022122202012 its reverse (21020222122012), we get a palindrome (42042344324024).

The spelling of 21022122202012 in words is "twenty-one trillion, twenty-two billion, one hundred twenty-two million, two hundred two thousand, twelve".