201111121220001 has 8 divisors (see below), whose sum is σ = 268151729197920. Its totient is φ = 134072297027712.

The previous prime is 201111121219999. The next prime is 201111121220011. The reversal of 201111121220001 is 100022121111102.

It is a happy number.

201111121220001 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 201111121220001 - 2¹ = 201111121219999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201111121220011) 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, 445683315 + ... + 446134328.

It is an arithmetic number, because the mean of its divisors is an integer number (33518966149740).

Almost surely, 2^{201111121220001} is an apocalyptic number.

It is an amenable number.

201111121220001 is a deficient number, since it is larger than the sum of its proper divisors (67040607977919).

201111121220001 is an equidigital number, since it uses as much as digits as its factorization.

201111121220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891892815.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 201111121220001 its reverse (100022121111102), we get a palindrome (301133242331103).

The spelling of 201111121220001 in words is "two hundred one trillion, one hundred eleven billion, one hundred twenty-one million, two hundred twenty thousand, one".