21043224221102 has 16 divisors (see below), whose sum is σ = 31795475841024. Its totient is φ = 10444827015000.

The previous prime is 21043224221077. The next prime is 21043224221153. The reversal of 21043224221102 is 20112242234012.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23240174 + ... + 24128657.

It is an arithmetic number, because the mean of its divisors is an integer number (1987217240064).

Almost surely, 2^{21043224221102} is an apocalyptic number.

21043224221102 is a deficient number, since it is larger than the sum of its proper divisors (10752251619922).

21043224221102 is a wasteful number, since it uses less digits than its factorization.

21043224221102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47370455.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 21043224221102 its reverse (20112242234012), we get a palindrome (41155466455114).

The spelling of 21043224221102 in words is "twenty-one trillion, forty-three billion, two hundred twenty-four million, two hundred twenty-one thousand, one hundred two".