10211001111001 has 4 divisors (see below), whose sum is σ = 10312100132004. Its totient is φ = 10109902090000.

The previous prime is 10211001110983. The next prime is 10211001111007. The reversal of 10211001111001 is 10011110011201.

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 7434762008976 + 2776239102025 = 2726676^2 + 1666205^2 .

It is a cyclic number.

It is not a de Polignac number, because 10211001111001 - 2⁹ = 10211001110489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10211001111007) 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, 50549510350 + ... + 50549510551.

It is an arithmetic number, because the mean of its divisors is an integer number (2578025033001).

Almost surely, 2^{10211001111001} is an apocalyptic number.

It is an amenable number.

10211001111001 is a deficient number, since it is larger than the sum of its proper divisors (101099021003).

10211001111001 is a wasteful number, since it uses less digits than its factorization.

10211001111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101099021002.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 10211001111001 its reverse (10011110011201), we get a palindrome (20222111122202).

The spelling of 10211001111001 in words is "ten trillion, two hundred eleven billion, one million, one hundred eleven thousand, one".