21202000122012 has 24 divisors (see below), whose sum is σ = 50282339088912. Its totient is φ = 6951475449600.

The previous prime is 21202000122011. The next prime is 21202000122029. The reversal of 21202000122012 is 21022100020212.

21202000122012 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 21202000121982 and 21202000122000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202000122011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14482239789 + ... + 14482241252.

It is an arithmetic number, because the mean of its divisors is an integer number (2095097462038).

Almost surely, 2^{21202000122012} is an apocalyptic number.

It is an amenable number.

21202000122012 is an abundant number, since it is smaller than the sum of its proper divisors (29080338966900).

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

21202000122012 is a wasteful number, since it uses less digits than its factorization.

21202000122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28964481109 (or 28964481107 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21202000122012 its reverse (21022100020212), we get a palindrome (42224100142224).

The spelling of 21202000122012 in words is "twenty-one trillion, two hundred two billion, one hundred twenty-two thousand, twelve".