2101100331311 has 4 divisors (see below), whose sum is σ = 2101143757752. Its totient is φ = 2101056904872.

The previous prime is 2101100331307. The next prime is 2101100331331. The reversal of 2101100331311 is 1131330011012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2101100331311 - 2² = 2101100331307 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 2101100331311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101100331331) 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, 21640565 + ... + 21737438.

It is an arithmetic number, because the mean of its divisors is an integer number (525285939438).

Almost surely, 2^{2101100331311} is an apocalyptic number.

2101100331311 is a deficient number, since it is larger than the sum of its proper divisors (43426441).

2101100331311 is an equidigital number, since it uses as much as digits as its factorization.

2101100331311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43426440.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 2101100331311 its reverse (1131330011012), we get a palindrome (3232430342323).

The spelling of 2101100331311 in words is "two trillion, one hundred one billion, one hundred million, three hundred thirty-one thousand, three hundred eleven".