11118100381 has 2 divisors, whose sum is σ = 11118100382. Its totient is φ = 11118100380.

The previous prime is 11118100333. The next prime is 11118100393. The reversal of 11118100381 is 18300181111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10172537881 + 945562500 = 100859^2 + 30750^2 .

It is a cyclic number.

It is not a de Polignac number, because 11118100381 - 2¹¹ = 11118098333 is a prime.

It is a super-2 number, since 2×11118100381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11118106381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5559050190 + 5559050191.

It is an arithmetic number, because the mean of its divisors is an integer number (5559050191).

Almost surely, 2^11118100381 is an apocalyptic number.

It is an amenable number.

11118100381 is a deficient number, since it is larger than the sum of its proper divisors (1).

11118100381 is an equidigital number, since it uses as much as digits as its factorization.

11118100381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 25.

Adding to 11118100381 its reverse (18300181111), we get a palindrome (29418281492).

The spelling of 11118100381 in words is "eleven billion, one hundred eighteen million, one hundred thousand, three hundred eighty-one".