21103321200111 has 20 divisors (see below), whose sum is σ = 31525936238632. Its totient is φ = 14068335510288.

The previous prime is 21103321200041. The next prime is 21103321200163. The reversal of 21103321200111 is 11100212330112.

21103321200111 is a `hidden beast` number, since 21 + 1 + 0 + 332 + 1 + 200 + 111 = 666.

It is not a de Polignac number, because 21103321200111 - 2²¹ = 21103319102959 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 (21103321201111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2940820 + ... + 7131273.

Almost surely, 2^{21103321200111} is an apocalyptic number.

21103321200111 is a deficient number, since it is larger than the sum of its proper divisors (10422615038521).

21103321200111 is a wasteful number, since it uses less digits than its factorization.

21103321200111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10097972 (or 10097963 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 21103321200111 its reverse (11100212330112), we get a palindrome (32203533530223).

The spelling of 21103321200111 in words is "twenty-one trillion, one hundred three billion, three hundred twenty-one million, two hundred thousand, one hundred eleven".