21331024430222 has 16 divisors (see below), whose sum is σ = 35298243055152. Its totient is φ = 9604964095680.

The previous prime is 21331024430203. The next prime is 21331024430293. The reversal of 21331024430222 is 22203442013312.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 10005169868 + ... + 10005171999.

It is an arithmetic number, because the mean of its divisors is an integer number (2206140190947).

Almost surely, 2^{21331024430222} is an apocalyptic number.

21331024430222 is a deficient number, since it is larger than the sum of its proper divisors (13967218624930).

21331024430222 is a wasteful number, since it uses less digits than its factorization.

21331024430222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20010341923.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 21331024430222 its reverse (22203442013312), we get a palindrome (43534466443534).

The spelling of 21331024430222 in words is "twenty-one trillion, three hundred thirty-one billion, twenty-four million, four hundred thirty thousand, two hundred twenty-two".