11191110021111 has 16 divisors (see below), whose sum is σ = 15341259391200. Its totient is φ = 7251284441088.

The previous prime is 11191110021089. The next prime is 11191110021127. The reversal of 11191110021111 is 11112001119111.

It is not a de Polignac number, because 11191110021111 - 2⁵ = 11191110021079 is a prime.

It is a super-2 number, since 2×11191110021111² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11191110021181) 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, 54159966 + ... + 54366203.

It is an arithmetic number, because the mean of its divisors is an integer number (958828711950).

Almost surely, 2^{11191110021111} is an apocalyptic number.

11191110021111 is a deficient number, since it is larger than the sum of its proper divisors (4150149370089).

11191110021111 is a wasteful number, since it uses less digits than its factorization.

11191110021111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108527138.

The product of its (nonzero) digits is 18, while the sum is 21.

The spelling of 11191110021111 in words is "eleven trillion, one hundred ninety-one billion, one hundred ten million, twenty-one thousand, one hundred eleven".