2101111021311 has 16 divisors (see below), whose sum is σ = 2891908131840. Its totient is φ = 1355529058560.

The previous prime is 2101111021297. The next prime is 2101111021327. The reversal of 2101111021311 is 1131201111012.

It is not a de Polignac number, because 2101111021311 - 2¹⁰ = 2101111020287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101111021351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5317960 + ... + 5699378.

It is an arithmetic number, because the mean of its divisors is an integer number (180744258240).

Almost surely, 2^{2101111021311} is an apocalyptic number.

2101111021311 is a deficient number, since it is larger than the sum of its proper divisors (790797110529).

2101111021311 is a wasteful number, since it uses less digits than its factorization.

2101111021311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440686.

The product of its (nonzero) digits is 12, while the sum is 15.

Adding to 2101111021311 its reverse (1131201111012), we get a palindrome (3232312132323).

The spelling of 2101111021311 in words is "two trillion, one hundred one billion, one hundred eleven million, twenty-one thousand, three hundred eleven".