21100013320211 has 6 divisors (see below), whose sum is σ = 24544913454180. Its totient is φ = 18085725702996.

The previous prime is 21100013320189. The next prime is 21100013320223. The reversal of 21100013320211 is 11202331000112.

It is not a de Polignac number, because 21100013320211 - 2⁴² = 16701966809107 is a prime.

It is a super-2 number, since 2×21100013320211² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21100013320211.

It is not an unprimeable number, because it can be changed into a prime (21100013320231) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 215306258321 + ... + 215306258418.

It is an arithmetic number, because the mean of its divisors is an integer number (4090818909030).

Almost surely, 2^{21100013320211} is an apocalyptic number.

21100013320211 is a deficient number, since it is larger than the sum of its proper divisors (3444900133969).

21100013320211 is an equidigital number, since it uses as much as digits as its factorization.

21100013320211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430612516753 (or 430612516746 counting only the distinct ones).

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

Adding to 21100013320211 its reverse (11202331000112), we get a palindrome (32302344320323).

The spelling of 21100013320211 in words is "twenty-one trillion, one hundred billion, thirteen million, three hundred twenty thousand, two hundred eleven".