201110111110021 has 8 divisors (see below), whose sum is σ = 203590904004000. Its totient is φ = 198644399024400.

The previous prime is 201110111110009. The next prime is 201110111110039. The reversal of 201110111110021 is 120011111011102.

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 201110111110021 - 2¹¹ = 201110111107973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201110111109983 and 201110111110010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201110111110421) 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, 3770175255 + ... + 3770228596.

It is an arithmetic number, because the mean of its divisors is an integer number (25448863000500).

Almost surely, 2^{201110111110021} is an apocalyptic number.

It is an amenable number.

201110111110021 is a deficient number, since it is larger than the sum of its proper divisors (2480792893979).

201110111110021 is a wasteful number, since it uses less digits than its factorization.

201110111110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7540404179.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 201110111110021 its reverse (120011111011102), we get a palindrome (321121222121123).

The spelling of 201110111110021 in words is "two hundred one trillion, one hundred ten billion, one hundred eleven million, one hundred ten thousand, twenty-one".