21103101123203 has 8 divisors (see below), whose sum is σ = 23021887264560. Its totient is φ = 19184368715680.

The previous prime is 21103101123199. The next prime is 21103101123227. The reversal of 21103101123203 is 30232110130112.

It is a happy number.

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 21103101123203 - 2² = 21103101123199 is a prime.

It is a super-2 number, since 2×21103101123203² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21103101123703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12610088 + ... + 14185221.

It is an arithmetic number, because the mean of its divisors is an integer number (2877735908070).

Almost surely, 2^{21103101123203} is an apocalyptic number.

21103101123203 is a deficient number, since it is larger than the sum of its proper divisors (1918786141357).

21103101123203 is a wasteful number, since it uses less digits than its factorization.

21103101123203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26866917.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21103101123203 its reverse (30232110130112), we get a palindrome (51335211253315).

The spelling of 21103101123203 in words is "twenty-one trillion, one hundred three billion, one hundred one million, one hundred twenty-three thousand, two hundred three".