1125215011 has 2 divisors, whose sum is σ = 1125215012. Its totient is φ = 1125215010.

The previous prime is 1125214999. The next prime is 1125215059. The reversal of 1125215011 is 1105125211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1125215011 - 2¹⁵ = 1125182243 is a prime.

It is a super-2 number, since 2×1125215011² = 2532217641959460242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1125215011.

It is not a weakly prime, because it can be changed into another prime (1125210011) 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, 562607505 + 562607506.

It is an arithmetic number, because the mean of its divisors is an integer number (562607506).

Almost surely, 2^1125215011 is an apocalyptic number.

1125215011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125215011 is an equidigital number, since it uses as much as digits as its factorization.

1125215011 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 1125215011 is about 33544.2247041126. The cubic root of 1125215011 is about 1040.1081652168.

The spelling of 1125215011 in words is "one billion, one hundred twenty-five million, two hundred fifteen thousand, eleven".