21110231040211 has 4 divisors (see below), whose sum is σ = 22352009336712. Its totient is φ = 19868452743712.

The previous prime is 21110231040181. The next prime is 21110231040233. The reversal of 21110231040211 is 11204013201112.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 21110231040211 - 2¹³ = 21110231032019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21110231040511) 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, 620889148225 + ... + 620889148258.

It is an arithmetic number, because the mean of its divisors is an integer number (5588002334178).

Almost surely, 2^{21110231040211} is an apocalyptic number.

21110231040211 is a deficient number, since it is larger than the sum of its proper divisors (1241778296501).

21110231040211 is a wasteful number, since it uses less digits than its factorization.

21110231040211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241778296500.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 21110231040211 its reverse (11204013201112), we get a palindrome (32314244241323).

The spelling of 21110231040211 in words is "twenty-one trillion, one hundred ten billion, two hundred thirty-one million, forty thousand, two hundred eleven".