21113210121103 has 8 divisors (see below), whose sum is σ = 21126524452208. Its totient is φ = 21099896483904.

The previous prime is 21113210121071. The next prime is 21113210121109. The reversal of 21113210121103 is 30112101231112.

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 21113210121103 - 2⁵ = 21113210121071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113210121109) 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, 69463900 + ... + 69767182.

It is an arithmetic number, because the mean of its divisors is an integer number (2640815556526).

Almost surely, 2^{21113210121103} is an apocalyptic number.

21113210121103 is a deficient number, since it is larger than the sum of its proper divisors (13314331105).

21113210121103 is a wasteful number, since it uses less digits than its factorization.

21113210121103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346953.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 21113210121103 its reverse (30112101231112), we get a palindrome (51225311352215).

The spelling of 21113210121103 in words is "twenty-one trillion, one hundred thirteen billion, two hundred ten million, one hundred twenty-one thousand, one hundred three".