21100112044311 has 16 divisors (see below), whose sum is σ = 28157500800000. Its totient is φ = 14054737305888.

The previous prime is 21100112044309. The next prime is 21100112044373. The reversal of 21100112044311 is 11344021100112.

It is not a de Polignac number, because 21100112044311 - 2¹ = 21100112044309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21100112044381) 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, 16393390 + ... + 17633588.

It is an arithmetic number, because the mean of its divisors is an integer number (1759843800000).

Almost surely, 2^{21100112044311} is an apocalyptic number.

21100112044311 is a deficient number, since it is larger than the sum of its proper divisors (7057388755689).

21100112044311 is a wasteful number, since it uses less digits than its factorization.

21100112044311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245038.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 21100112044311 its reverse (11344021100112), we get a palindrome (32444133144423).

The spelling of 21100112044311 in words is "twenty-one trillion, one hundred billion, one hundred twelve million, forty-four thousand, three hundred eleven".