1115212051 has 2 divisors, whose sum is σ = 1115212052. Its totient is φ = 1115212050.

The previous prime is 1115212037. The next prime is 1115212057. The reversal of 1115212051 is 1502125111.

It is a strong prime.

It is an emirp because it is prime and its reverse (1502125111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1115212051 is a prime.

It is not a weakly prime, because it can be changed into another prime (1115212057) 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, 557606025 + 557606026.

It is an arithmetic number, because the mean of its divisors is an integer number (557606026).

Almost surely, 2^1115212051 is an apocalyptic number.

1115212051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115212051 is an equidigital number, since it uses as much as digits as its factorization.

1115212051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100, while the sum is 19.

The square root of 1115212051 is about 33394.7907764070. The cubic root of 1115212051 is about 1037.0168615348.

Adding to 1115212051 its reverse (1502125111), we get a palindrome (2617337162).

The spelling of 1115212051 in words is "one billion, one hundred fifteen million, two hundred twelve thousand, fifty-one".