21110211310011 has 16 divisors (see below), whose sum is σ = 29813171285664. Its totient is φ = 13240947216384.

The previous prime is 21110211309959. The next prime is 21110211310031. The reversal of 21110211310011 is 11001311201112.

It is not a de Polignac number, because 21110211310011 - 2¹¹ = 21110211307963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21110211310031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72909826 + ... + 73198791.

It is an arithmetic number, because the mean of its divisors is an integer number (1863323205354).

Almost surely, 2^{21110211310011} is an apocalyptic number.

21110211310011 is a deficient number, since it is larger than the sum of its proper divisors (8702959975653).

21110211310011 is a wasteful number, since it uses less digits than its factorization.

21110211310011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146111470.

The product of its (nonzero) digits is 12, while the sum is 15.

Adding to 21110211310011 its reverse (11001311201112), we get a palindrome (32111522511123).

The spelling of 21110211310011 in words is "twenty-one trillion, one hundred ten billion, two hundred eleven million, three hundred ten thousand, eleven".