11211010001 has 4 divisors (see below), whose sum is σ = 11352921600. Its totient is φ = 11069098404.

The previous prime is 11211009977. The next prime is 11211010033. The reversal of 11211010001 is 10001011211.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10001011211 = 163 ⋅61355897.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11211010001 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 (11211010061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70955681 + ... + 70955838.

It is an arithmetic number, because the mean of its divisors is an integer number (2838230400).

Almost surely, 2^11211010001 is an apocalyptic number.

It is an amenable number.

11211010001 is a deficient number, since it is larger than the sum of its proper divisors (141911599).

11211010001 is an equidigital number, since it uses as much as digits as its factorization.

11211010001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141911598.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 11211010001 its reverse (10001011211), we get a palindrome (21212021212).

The spelling of 11211010001 in words is "eleven billion, two hundred eleven million, ten thousand, one".