211001120102001 has 4 divisors (see below), whose sum is σ = 281334826802672. Its totient is φ = 140667413401332.

The previous prime is 211001120101997. The next prime is 211001120102077. The reversal of 211001120102001 is 100201021100112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 211001120102001 - 2² = 211001120101997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211001120102081) 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, 35166853350331 + ... + 35166853350336.

It is an arithmetic number, because the mean of its divisors is an integer number (70333706700668).

Almost surely, 2^{211001120102001} is an apocalyptic number.

It is an amenable number.

211001120102001 is a deficient number, since it is larger than the sum of its proper divisors (70333706700671).

211001120102001 is an equidigital number, since it uses as much as digits as its factorization.

211001120102001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70333706700670.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 211001120102001 its reverse (100201021100112), we get a palindrome (311202141202113).

The spelling of 211001120102001 in words is "two hundred eleven trillion, one billion, one hundred twenty million, one hundred two thousand, one".