21103221133000 has 128 divisors (see below), whose sum is σ = 53002588036320. Its totient is φ = 7835909529600.

The previous prime is 21103221132991. The next prime is 21103221133067. The reversal of 21103221133000 is 33112230112.

It can be written as a sum of positive squares in 16 ways, for example, as 1949871518884 + 19153349614116 = 1396378^2 + 4376454^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7261507 + ... + 9743506.

Almost surely, 2^{21103221133000} is an apocalyptic number.

21103221133000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21103221133000 is an abundant number, since it is smaller than the sum of its proper divisors (31899366903320).

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

21103221133000 is a wasteful number, since it uses less digits than its factorization.

21103221133000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17005124 (or 17005110 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21103221133000 its reverse (33112230112), we get a palindrome (21136333363112).

The spelling of 21103221133000 in words is "twenty-one trillion, one hundred three billion, two hundred twenty-one million, one hundred thirty-three thousand".