21242211224212 has 48 divisors (see below), whose sum is σ = 40956882120000. Its totient is φ = 9559472096000.

The previous prime is 21242211224203. The next prime is 21242211224237.

It is a happy number.

21242211224212 is nontrivially palindromic in base 10.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97557039 + ... + 97774537.

It is an arithmetic number, because the mean of its divisors is an integer number (853268377500).

Almost surely, 2^{21242211224212} is an apocalyptic number.

21242211224212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21242211224212 is a deficient number, since it is larger than the sum of its proper divisors (19714670895788).

21242211224212 is a wasteful number, since it uses less digits than its factorization.

21242211224212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239592 (or 239590 counting only the distinct ones).

The product of its digits is 4096, while the sum is 28.

It can be divided in two parts, 2124221 and 1224212, that added together give a palindrome (3348433).

The spelling of 21242211224212 in words is "twenty-one trillion, two hundred forty-two billion, two hundred eleven million, two hundred twenty-four thousand, two hundred twelve".