2011111022111 has 12 divisors (see below), whose sum is σ = 2102800284480. Its totient is φ = 1923261552960.

The previous prime is 2011111022101. The next prime is 2011111022189. The reversal of 2011111022111 is 1112201111102.

It is not a de Polignac number, because 2011111022111 - 2⁶ = 2011111022047 is a prime.

It is a super-2 number, since 2×2011111022111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011111022101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2094770 + ... + 2900048.

It is an arithmetic number, because the mean of its divisors is an integer number (175233357040).

Almost surely, 2^{2011111022111} is an apocalyptic number.

2011111022111 is a deficient number, since it is larger than the sum of its proper divisors (91689262369).

2011111022111 is an equidigital number, since it uses as much as digits as its factorization.

2011111022111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810046 (or 810023 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 2011111022111 its reverse (1112201111102), we get a palindrome (3123312133213).

The spelling of 2011111022111 in words is "two trillion, eleven billion, one hundred eleven million, twenty-two thousand, one hundred eleven".