201111121001 has 8 divisors (see below), whose sum is σ = 230213800320. Its totient is φ = 172101571488.

The previous prime is 201111120967. The next prime is 201111121033. The reversal of 201111121001 is 100121111102.

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

It is not a de Polignac number, because 201111121001 - 2²² = 201106926697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201111121051) 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, 23277821 + ... + 23286458.

It is an arithmetic number, because the mean of its divisors is an integer number (28776725040).

Almost surely, 2^201111121001 is an apocalyptic number.

It is an amenable number.

201111121001 is a deficient number, since it is larger than the sum of its proper divisors (29102679319).

201111121001 is an equidigital number, since it uses as much as digits as its factorization.

201111121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46564903.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 201111121001 its reverse (100121111102), we get a palindrome (301232232103).

The spelling of 201111121001 in words is "two hundred one billion, one hundred eleven million, one hundred twenty-one thousand, one".