21103333321120 has 24 divisors (see below), whose sum is σ = 49856624971524. Its totient is φ = 8441333328384.

The previous prime is 21103333321069. The next prime is 21103333321123. The reversal of 21103333321120 is 2112333330112.

It can be written as a sum of positive squares in 2 ways, for example, as 20955117560976 + 148215760144 = 4577676^2 + 384988^2 .

It is not an unprimeable number, because it can be changed into a prime (21103333321123) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 65947916469 + ... + 65947916788.

Almost surely, 2^{21103333321120} is an apocalyptic number.

21103333321120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21103333321120 is an abundant number, since it is smaller than the sum of its proper divisors (28753291650404).

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

21103333321120 is a wasteful number, since it uses less digits than its factorization.

21103333321120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131895833272 (or 131895833264 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 21103333321120 its reverse (2112333330112), we get a palindrome (23215666651232).

The spelling of 21103333321120 in words is "twenty-one trillion, one hundred three billion, three hundred thirty-three million, three hundred twenty-one thousand, one hundred twenty".