11111122051 has 2 divisors, whose sum is σ = 11111122052. Its totient is φ = 11111122050.

The previous prime is 11111122039. The next prime is 11111122069. The reversal of 11111122051 is 15022111111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11111122051 - 2¹³ = 11111113859 is a prime.

It is not a weakly prime, because it can be changed into another prime (11111422051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555561025 + 5555561026.

It is an arithmetic number, because the mean of its divisors is an integer number (5555561026).

Almost surely, 2^11111122051 is an apocalyptic number.

11111122051 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111122051 is an equidigital number, since it uses as much as digits as its factorization.

11111122051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20, while the sum is 16.

Adding to 11111122051 its reverse (15022111111), we get a palindrome (26133233162).

The spelling of 11111122051 in words is "eleven billion, one hundred eleven million, one hundred twenty-two thousand, fifty-one".