201120100001 has 4 divisors (see below), whose sum is σ = 202162173252. Its totient is φ = 200078026752.

The previous prime is 201120099997. The next prime is 201120100039. The reversal of 201120100001 is 100001021102.

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 33776926225 + 167343173776 = 183785^2 + 409076^2 .

It is a cyclic number.

It is not a de Polignac number, because 201120100001 - 2² = 201120099997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (201120100801) 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, 521036336 + ... + 521036721.

It is an arithmetic number, because the mean of its divisors is an integer number (50540543313).

Almost surely, 2^201120100001 is an apocalyptic number.

It is an amenable number.

201120100001 is a deficient number, since it is larger than the sum of its proper divisors (1042073251).

201120100001 is a wasteful number, since it uses less digits than its factorization.

201120100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042073250.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 201120100001 its reverse (100001021102), we get a palindrome (301121121103).

The spelling of 201120100001 in words is "two hundred one billion, one hundred twenty million, one hundred thousand, one".