201001111101111 has 4 divisors (see below), whose sum is σ = 268001481468152. Its totient is φ = 134000740734072.

The previous prime is 201001111101059. The next prime is 201001111101149. The reversal of 201001111101111 is 111101111100102.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 201001111101111 - 2⁶ = 201001111101047 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 (201001111101211) 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, 33500185183516 + ... + 33500185183521.

It is an arithmetic number, because the mean of its divisors is an integer number (67000370367038).

Almost surely, 2^{201001111101111} is an apocalyptic number.

201001111101111 is a deficient number, since it is larger than the sum of its proper divisors (67000370367041).

201001111101111 is an equidigital number, since it uses as much as digits as its factorization.

201001111101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67000370367040.

The product of its (nonzero) digits is 2, while the sum is 12.

Adding to 201001111101111 its reverse (111101111100102), we get a palindrome (312102222201213).

The spelling of 201001111101111 in words is "two hundred one trillion, one billion, one hundred eleven million, one hundred one thousand, one hundred eleven".