201100120212001 has 4 divisors (see below), whose sum is σ = 201639262625812. Its totient is φ = 200560977798192.

The previous prime is 201100120211929. The next prime is 201100120212011. The reversal of 201100120212001 is 100212021001102.

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 44762107821601 + 156338012390400 = 6690449^2 + 12503520^2 .

It is a cyclic number.

It is not a de Polignac number, because 201100120212001 - 2⁹ = 201100120211489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201100120212011) 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, 269571206346 + ... + 269571207091.

It is an arithmetic number, because the mean of its divisors is an integer number (50409815656453).

Almost surely, 2^{201100120212001} is an apocalyptic number.

It is an amenable number.

201100120212001 is a deficient number, since it is larger than the sum of its proper divisors (539142413811).

201100120212001 is an equidigital number, since it uses as much as digits as its factorization.

201100120212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539142413810.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 201100120212001 its reverse (100212021001102), we get a palindrome (301312141213103).

The spelling of 201100120212001 in words is "two hundred one trillion, one hundred billion, one hundred twenty million, two hundred twelve thousand, one".