21100243211013 has 8 divisors (see below), whose sum is σ = 28134159321376. Its totient is φ = 14066577954000.

The previous prime is 21100243210979. The next prime is 21100243211101. The reversal of 21100243211013 is 31011234200112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21100243211013 - 2⁸ = 21100243210757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21100243211213) 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, 62516983 + ... + 62853588.

It is an arithmetic number, because the mean of its divisors is an integer number (3516769915172).

Almost surely, 2^{21100243211013} is an apocalyptic number.

It is an amenable number.

21100243211013 is a deficient number, since it is larger than the sum of its proper divisors (7033916110363).

21100243211013 is a wasteful number, since it uses less digits than its factorization.

21100243211013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125426675.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 21100243211013 its reverse (31011234200112), we get a palindrome (52111477411125).

The spelling of 21100243211013 in words is "twenty-one trillion, one hundred billion, two hundred forty-three million, two hundred eleven thousand, thirteen".