11011111051 has 2 divisors, whose sum is σ = 11011111052.
Its totient is φ = 11011111050.
The previous prime is 11011111049. The next prime is 11011111117. The reversal of 11011111051 is 15011111011.
Adding to 11011111051 its reverse (15011111011), we get a palindrome (26022222062).
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 11011111051 - 21 = 11011111049 is a prime.
Together with 11011111049, it forms a pair of twin primes.
It is not a weakly prime, because it can be changed into another prime (11011111031) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505555525 + 5505555526.
It is an arithmetic number, because the mean of its divisors is an integer number (5505555526).
Almost surely, 211011111051 is an apocalyptic number.
11011111051 is a deficient number, since it is larger than the sum of its proper divisors (1).
11011111051 is an equidigital number, since it uses as much as digits as its factorization.
11011111051 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 5, while the sum is 13.
The spelling of 11011111051 in words is "eleven billion, eleven million, one hundred eleven thousand, fifty-one".