21104055203 has 8 divisors (see below), whose sum is σ = 26311549440. Its totient is φ = 16444718280.

The previous prime is 21104055169. The next prime is 21104055211. The reversal of 21104055203 is 30255040112.

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

It is a cyclic number.

It is not a de Polignac number, because 21104055203 - 2¹⁶ = 21103989667 is a prime.

It is a super-2 number, since 2×21104055203² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21104055703) 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 7 ways as a sum of consecutive naturals, for example, 137039243 + ... + 137039396.

It is an arithmetic number, because the mean of its divisors is an integer number (3288943680).

Almost surely, 2^21104055203 is an apocalyptic number.

21104055203 is a deficient number, since it is larger than the sum of its proper divisors (5207494237).

21104055203 is a wasteful number, since it uses less digits than its factorization.

21104055203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274078657.

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 21104055203 its reverse (30255040112), we get a palindrome (51359095315).

The spelling of 21104055203 in words is "twenty-one billion, one hundred four million, fifty-five thousand, two hundred three".