2111101020001 has 4 divisors (see below), whose sum is σ = 2150933114772. Its totient is φ = 2071268925232.

The previous prime is 2111101019999. The next prime is 2111101020029. The reversal of 2111101020001 is 1000201011112.

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 1128266715601 + 982834304400 = 1062199^2 + 991380^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111101020001 - 2¹ = 2111101019999 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 2111101020001.

It is not an unprimeable number, because it can be changed into a prime (2111101090001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19916047306 + ... + 19916047411.

It is an arithmetic number, because the mean of its divisors is an integer number (537733278693).

Almost surely, 2^{2111101020001} is an apocalyptic number.

It is an amenable number.

2111101020001 is a deficient number, since it is larger than the sum of its proper divisors (39832094771).

2111101020001 is an equidigital number, since it uses as much as digits as its factorization.

2111101020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39832094770.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 2111101020001 its reverse (1000201011112), we get a palindrome (3111302031113).

The spelling of 2111101020001 in words is "two trillion, one hundred eleven billion, one hundred one million, twenty thousand, one".