21110221320322 has 8 divisors (see below), whose sum is σ = 32757239979900. Its totient is φ = 10191141327024.

The previous prime is 21110221320289. The next prime is 21110221320347. The reversal of 21110221320322 is 22302312201112.

It can be written as a sum of positive squares in 2 ways, for example, as 20351926938721 + 758294381601 = 4511311^2 + 870801^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21110221320293 and 21110221320302.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181984666497 + ... + 181984666612.

Almost surely, 2^{21110221320322} is an apocalyptic number.

21110221320322 is a deficient number, since it is larger than the sum of its proper divisors (11647018659578).

21110221320322 is a wasteful number, since it uses less digits than its factorization.

21110221320322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363969333140.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21110221320322 its reverse (22302312201112), we get a palindrome (43412533521434).

The spelling of 21110221320322 in words is "twenty-one trillion, one hundred ten billion, two hundred twenty-one million, three hundred twenty thousand, three hundred twenty-two".