21110221330332 has 48 divisors (see below), whose sum is σ = 49289975673120. Its totient is φ = 7032057366528.

The previous prime is 21110221330291. The next prime is 21110221330343. The reversal of 21110221330332 is 23303312201112.

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, 110493544 + ... + 110684432.

It is an arithmetic number, because the mean of its divisors is an integer number (1026874493190).

Almost surely, 2^{21110221330332} is an apocalyptic number.

It is an amenable number.

21110221330332 is an abundant number, since it is smaller than the sum of its proper divisors (28179754342788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21110221330332 is a wasteful number, since it uses less digits than its factorization.

21110221330332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196982 (or 196980 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 21110221330332 its reverse (23303312201112), we get a palindrome (44413533531444).

The spelling of 21110221330332 in words is "twenty-one trillion, one hundred ten billion, two hundred twenty-one million, three hundred thirty thousand, three hundred thirty-two".