201110110001009 has 4 divisors (see below), whose sum is σ = 219392847273840. Its totient is φ = 182827372728180.

The previous prime is 201110110000997. The next prime is 201110110001023. The reversal of 201110110001009 is 900100011011102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201110110001009 - 2²⁰ = 201110108952433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201110110006009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9141368636399 + ... + 9141368636420.

It is an arithmetic number, because the mean of its divisors is an integer number (54848211818460).

Almost surely, 2^{201110110001009} is an apocalyptic number.

It is an amenable number.

201110110001009 is a deficient number, since it is larger than the sum of its proper divisors (18282737272831).

201110110001009 is a wasteful number, since it uses less digits than its factorization.

201110110001009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18282737272830.

The product of its (nonzero) digits is 18, while the sum is 17.

The spelling of 201110110001009 in words is "two hundred one trillion, one hundred ten billion, one hundred ten million, one thousand, nine".