21010001110111 has 8 divisors (see below), whose sum is σ = 22642010811504. Its totient is φ = 19380256518720.

The previous prime is 21010001110099. The next prime is 21010001110121. The reversal of 21010001110111 is 11101110001012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21010001110111 - 2¹³ = 21010001101919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010001110121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 566258230 + ... + 566295331.

It is an arithmetic number, because the mean of its divisors is an integer number (2830251351438).

Almost surely, 2^{21010001110111} is an apocalyptic number.

21010001110111 is a deficient number, since it is larger than the sum of its proper divisors (1632009701393).

21010001110111 is a wasteful number, since it uses less digits than its factorization.

21010001110111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132555001.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 21010001110111 its reverse (11101110001012), we get a palindrome (32111111111123).

The spelling of 21010001110111 in words is "twenty-one trillion, ten billion, one million, one hundred ten thousand, one hundred eleven".