2111100022111 has 4 divisors (see below), whose sum is σ = 2111118399352. Its totient is φ = 2111081644872.

The previous prime is 2111100022079. The next prime is 2111100022169. The reversal of 2111100022111 is 1112200011112.

It is a happy number.

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 2111100022111 - 2⁵ = 2111100022079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2111100022091 and 2111100022100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111100022211) 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, 9015216 + ... + 9246421.

It is an arithmetic number, because the mean of its divisors is an integer number (527779599838).

Almost surely, 2^{2111100022111} is an apocalyptic number.

2111100022111 is a deficient number, since it is larger than the sum of its proper divisors (18377241).

2111100022111 is a wasteful number, since it uses less digits than its factorization.

2111100022111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18377240.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 2111100022111 its reverse (1112200011112), we get a palindrome (3223300033223).

The spelling of 2111100022111 in words is "two trillion, one hundred eleven billion, one hundred million, twenty-two thousand, one hundred eleven".