201112102001 has 4 divisors (see below), whose sum is σ = 208047002100. Its totient is φ = 194177201904.

The previous prime is 201112101977. The next prime is 201112102021. The reversal of 201112102001 is 100201211102.

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

It can be written as a sum of positive squares in 2 ways, for example, as 68068810000 + 133043292001 = 260900^2 + 364751^2 .

It is a cyclic number.

It is not a de Polignac number, because 201112102001 - 2¹⁴ = 201112085617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201112102021) 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, 3467450006 + ... + 3467450063.

It is an arithmetic number, because the mean of its divisors is an integer number (52011750525).

Almost surely, 2^201112102001 is an apocalyptic number.

It is an amenable number.

201112102001 is a deficient number, since it is larger than the sum of its proper divisors (6934900099).

201112102001 is an equidigital number, since it uses as much as digits as its factorization.

201112102001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6934900098.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 201112102001 its reverse (100201211102), we get a palindrome (301313313103).

The spelling of 201112102001 in words is "two hundred one billion, one hundred twelve million, one hundred two thousand, one".