10211112111001 has 4 divisors (see below), whose sum is σ = 10243735472692. Its totient is φ = 10178488749312.

The previous prime is 10211112110993. The next prime is 10211112111073. The reversal of 10211112111001 is 10011121111201.

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 880408766601 + 9330703344400 = 938301^2 + 3054620^2 .

It is a cyclic number.

It is not a de Polignac number, because 10211112111001 - 2³ = 10211112110993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10211112111901) 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, 16311680376 + ... + 16311681001.

It is an arithmetic number, because the mean of its divisors is an integer number (2560933868173).

Almost surely, 2^{10211112111001} is an apocalyptic number.

It is an amenable number.

10211112111001 is a deficient number, since it is larger than the sum of its proper divisors (32623361691).

10211112111001 is an equidigital number, since it uses as much as digits as its factorization.

10211112111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32623361690.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 10211112111001 its reverse (10011121111201), we get a palindrome (20222233222202).

The spelling of 10211112111001 in words is "ten trillion, two hundred eleven billion, one hundred twelve million, one hundred eleven thousand, one".