211000102001 has 4 divisors (see below), whose sum is σ = 227230879092. Its totient is φ = 194769324912.

The previous prime is 211000101967. The next prime is 211000102003. The reversal of 211000102001 is 100201000112.

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 108231130225 + 102768971776 = 328985^2 + 320576^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211000102001 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211000102001.

It is not an unprimeable number, because it can be changed into a prime (211000102003) 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, 8115388526 + ... + 8115388551.

It is an arithmetic number, because the mean of its divisors is an integer number (56807719773).

Almost surely, 2^211000102001 is an apocalyptic number.

It is an amenable number.

211000102001 is a deficient number, since it is larger than the sum of its proper divisors (16230777091).

211000102001 is a wasteful number, since it uses less digits than its factorization.

211000102001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16230777090.

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

Adding to 211000102001 its reverse (100201000112), we get a palindrome (311201102113).

The spelling of 211000102001 in words is "two hundred eleven billion, one hundred two thousand, one".