11101011222111 has 64 divisors (see below), whose sum is σ = 15608265007104. Its totient is φ = 7009974316800.

The previous prime is 11101011222101. The next prime is 11101011222137. The reversal of 11101011222111 is 11122211010111.

It is a de Polignac number, because none of the positive numbers 2^k-11101011222111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101011222101) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 634951576 + ... + 634969058.

It is an arithmetic number, because the mean of its divisors is an integer number (243879140736).

Almost surely, 2^{11101011222111} is an apocalyptic number.

11101011222111 is a deficient number, since it is larger than the sum of its proper divisors (4507253784993).

11101011222111 is a wasteful number, since it uses less digits than its factorization.

11101011222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18284.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 11101011222111 its reverse (11122211010111), we get a palindrome (22223222232222).

The spelling of 11101011222111 in words is "eleven trillion, one hundred one billion, eleven million, two hundred twenty-two thousand, one hundred eleven".