2111020011111 has 16 divisors (see below), whose sum is σ = 3072421048320. Its totient is φ = 1278636697920.

The previous prime is 2111020011109. The next prime is 2111020011157. The reversal of 2111020011111 is 1111100201112.

It is not a de Polignac number, because 2111020011111 - 2¹ = 2111020011109 is a prime.

It is a super-2 number, since 2×2111020011111² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111020011101) 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, 19178526 + ... + 19288283.

It is an arithmetic number, because the mean of its divisors is an integer number (192026315520).

Almost surely, 2^{2111020011111} is an apocalyptic number.

2111020011111 is a deficient number, since it is larger than the sum of its proper divisors (961401037209).

2111020011111 is a wasteful number, since it uses less digits than its factorization.

2111020011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38468486.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 2111020011111 its reverse (1111100201112), we get a palindrome (3222120212223).

The spelling of 2111020011111 in words is "two trillion, one hundred eleven billion, twenty million, eleven thousand, one hundred eleven".