21110001010011 has 12 divisors (see below), whose sum is σ = 30507076227888. Its totient is φ = 14066478985104.

The previous prime is 21110001009967. The next prime is 21110001010037. The reversal of 21110001010011 is 11001010001112.

It is not a de Polignac number, because 21110001010011 - 2⁹ = 21110001009499 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 21110001009975 and 21110001010002.

It is not an unprimeable number, because it can be changed into a prime (21110001710011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 571232295 + ... + 571269248.

It is an arithmetic number, because the mean of its divisors is an integer number (2542256352324).

Almost surely, 2^{21110001010011} is an apocalyptic number.

21110001010011 is a deficient number, since it is larger than the sum of its proper divisors (9397075217877).

21110001010011 is a wasteful number, since it uses less digits than its factorization.

21110001010011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142503602 (or 1142503599 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 21110001010011 its reverse (11001010001112), we get a palindrome (32111011011123).

The spelling of 21110001010011 in words is "twenty-one trillion, one hundred ten billion, one million, ten thousand, eleven".