21103132202111 has 4 divisors (see below), whose sum is σ = 21103458874872. Its totient is φ = 21102805529352.

The previous prime is 21103132202029. The next prime is 21103132202149. The reversal of 21103132202111 is 11120223130112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21103132202111 - 2¹⁴ = 21103132185727 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 (21103132202011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163239461 + ... + 163368686.

It is an arithmetic number, because the mean of its divisors is an integer number (5275864718718).

Almost surely, 2^{21103132202111} is an apocalyptic number.

21103132202111 is a deficient number, since it is larger than the sum of its proper divisors (326672761).

21103132202111 is an equidigital number, since it uses as much as digits as its factorization.

21103132202111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326672760.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 21103132202111 its reverse (11120223130112), we get a palindrome (32223355332223).

The spelling of 21103132202111 in words is "twenty-one trillion, one hundred three billion, one hundred thirty-two million, two hundred two thousand, one hundred eleven".