21550330554110 has 16 divisors (see below), whose sum is σ = 38792000390832. Its totient is φ = 8619819912000.

The previous prime is 21550330554091. The next prime is 21550330554127. The reversal of 21550330554110 is 1145503305512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38748791 + ... + 39301010.

It is an arithmetic number, because the mean of its divisors is an integer number (2424500024427).

Almost surely, 2^{21550330554110} is an apocalyptic number.

21550330554110 is a deficient number, since it is larger than the sum of its proper divisors (17241669836722).

21550330554110 is a wasteful number, since it uses less digits than its factorization.

21550330554110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78077419.

The product of its (nonzero) digits is 45000, while the sum is 35.

Adding to 21550330554110 its reverse (1145503305512), we get a palindrome (22695833859622).

The spelling of 21550330554110 in words is "twenty-one trillion, five hundred fifty billion, three hundred thirty million, five hundred fifty-four thousand, one hundred ten".