21013230200111 has 4 divisors (see below), whose sum is σ = 21209615529192. Its totient is φ = 20816844871032.

The previous prime is 21013230200107. The next prime is 21013230200117. The reversal of 21013230200111 is 11100203231012.

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 21013230200111 - 2² = 21013230200107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21013230200111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21013230200117) 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, 98192664380 + ... + 98192664593.

It is an arithmetic number, because the mean of its divisors is an integer number (5302403882298).

Almost surely, 2^{21013230200111} is an apocalyptic number.

21013230200111 is a deficient number, since it is larger than the sum of its proper divisors (196385329081).

21013230200111 is a wasteful number, since it uses less digits than its factorization.

21013230200111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196385329080.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21013230200111 its reverse (11100203231012), we get a palindrome (32113433431123).

The spelling of 21013230200111 in words is "twenty-one trillion, thirteen billion, two hundred thirty million, two hundred thousand, one hundred eleven".