11115042111 has 12 divisors (see below), whose sum is σ = 16220578192. Its totient is φ = 7333635456.

The previous prime is 11115042101. The next prime is 11115042121. The reversal of 11115042111 is 11124051111.

It is an interprime number because it is at equal distance from previous prime (11115042101) and next prime (11115042121).

It is not a de Polignac number, because 11115042111 - 2²¹ = 11112944959 is a prime.

It is a super-2 number, since 2×11115042111² (a number of 21 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 (11115042101) 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, 6365131 + ... + 6366876.

Almost surely, 2^11115042111 is an apocalyptic number.

11115042111 is a deficient number, since it is larger than the sum of its proper divisors (5105536081).

11115042111 is a wasteful number, since it uses less digits than its factorization.

11115042111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12732110 (or 12732107 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 18.

Adding to 11115042111 its reverse (11124051111), we get a palindrome (22239093222).

The spelling of 11115042111 in words is "eleven billion, one hundred fifteen million, forty-two thousand, one hundred eleven".