11111105151 has 16 divisors (see below), whose sum is σ = 16480005120. Its totient is φ = 7398804600.

The previous prime is 11111105147. The next prime is 11111105221. The reversal of 11111105151 is 15150111111.

It is not a de Polignac number, because 11111105151 - 2² = 11111105147 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111105111) 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, 215125 + ... + 261726.

It is an arithmetic number, because the mean of its divisors is an integer number (1030000320).

Almost surely, 2^11111105151 is an apocalyptic number.

11111105151 is a deficient number, since it is larger than the sum of its proper divisors (5368899969).

11111105151 is an equidigital number, since it uses as much as digits as its factorization.

11111105151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477723 (or 477717 counting only the distinct ones).

The product of its (nonzero) digits is 25, while the sum is 18.

Adding to 11111105151 its reverse (15150111111), we get a palindrome (26261216262).

The spelling of 11111105151 in words is "eleven billion, one hundred eleven million, one hundred five thousand, one hundred fifty-one".