21100010202211 has 4 divisors (see below), whose sum is σ = 21100067573400. Its totient is φ = 21099952831024.

The previous prime is 21100010202209. The next prime is 21100010202241. The reversal of 21100010202211 is 11220201000112.

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 21100010202211 - 2¹ = 21100010202209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21100010202191 and 21100010202200.

It is not an unprimeable number, because it can be changed into a prime (21100010202241) 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, 28130341 + ... + 28870678.

It is an arithmetic number, because the mean of its divisors is an integer number (5275016893350).

Almost surely, 2^{21100010202211} is an apocalyptic number.

21100010202211 is a deficient number, since it is larger than the sum of its proper divisors (57371189).

21100010202211 is an equidigital number, since it uses as much as digits as its factorization.

21100010202211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57371188.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21100010202211 its reverse (11220201000112), we get a palindrome (32320211202323).

The spelling of 21100010202211 in words is "twenty-one trillion, one hundred billion, ten million, two hundred two thousand, two hundred eleven".