21202122120212 has 96 divisors (see below), whose sum is σ = 42110625078144. Its totient is φ = 9257881651200.

The previous prime is 21202122120149. The next prime is 21202122120217.

21202122120212 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202122120217) 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 31 ways as a sum of consecutive naturals, for example, 22867787 + ... + 23776877.

It is an arithmetic number, because the mean of its divisors is an integer number (438652344564).

Almost surely, 2^{21202122120212} is an apocalyptic number.

21202122120212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21202122120212 is a deficient number, since it is larger than the sum of its proper divisors (20908502957932).

21202122120212 is a wasteful number, since it uses less digits than its factorization.

21202122120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909369 (or 909367 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

It can be divided in two parts, 2120212 and 2120212, that added together give a palindrome (4240424).

The spelling of 21202122120212 in words is "twenty-one trillion, two hundred two billion, one hundred twenty-two million, one hundred twenty thousand, two hundred twelve".