21112101010011 has 16 divisors (see below), whose sum is σ = 30758120461440. Its totient is φ = 12774541941120.

The previous prime is 21112101009997. The next prime is 21112101010057. The reversal of 21112101010011 is 11001010121112.

It is not a de Polignac number, because 21112101010011 - 2⁹ = 21112101009499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21112101010411) 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, 516749070 + ... + 516789923.

It is an arithmetic number, because the mean of its divisors is an integer number (1922382528840).

Almost surely, 2^{21112101010011} is an apocalyptic number.

21112101010011 is a deficient number, since it is larger than the sum of its proper divisors (9646019451429).

21112101010011 is a wasteful number, since it uses less digits than its factorization.

21112101010011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033539626.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 21112101010011 its reverse (11001010121112), we get a palindrome (32113111131123).

The spelling of 21112101010011 in words is "twenty-one trillion, one hundred twelve billion, one hundred one million, ten thousand, eleven".