21222331002212 has 24 divisors (see below), whose sum is σ = 38862280031232. Its totient is φ = 10128200385600.

The previous prime is 21222331002143. The next prime is 21222331002289. The reversal of 21222331002212 is 21220013322212.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1172236364 + ... + 1172254467.

It is an arithmetic number, because the mean of its divisors is an integer number (1619261667968).

Almost surely, 2^{21222331002212} is an apocalyptic number.

It is an amenable number.

21222331002212 is a deficient number, since it is larger than the sum of its proper divisors (17639949029020).

21222331002212 is a wasteful number, since it uses less digits than its factorization.

21222331002212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2344490939 (or 2344490937 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21222331002212 its reverse (21220013322212), we get a palindrome (42442344324424).

The spelling of 21222331002212 in words is "twenty-one trillion, two hundred twenty-two billion, three hundred thirty-one million, two thousand, two hundred twelve".