11101111138851 has 48 divisors (see below), whose sum is σ = 15739782938880. Its totient is φ = 6957399366720.

The previous prime is 11101111138849. The next prime is 11101111138913. The reversal of 11101111138851 is 15883111110111.

It is not a de Polignac number, because 11101111138851 - 2¹ = 11101111138849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11101111138801) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46559521 + ... + 46797341.

It is an arithmetic number, because the mean of its divisors is an integer number (327912144560).

Almost surely, 2^{11101111138851} is an apocalyptic number.

11101111138851 is a deficient number, since it is larger than the sum of its proper divisors (4638671800029).

11101111138851 is a wasteful number, since it uses less digits than its factorization.

11101111138851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238376 (or 238353 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 33.

Adding to 11101111138851 its reverse (15883111110111), we get a palindrome (26984222248962).

The spelling of 11101111138851 in words is "eleven trillion, one hundred one billion, one hundred eleven million, one hundred thirty-eight thousand, eight hundred fifty-one".