1205111230 has 16 divisors (see below), whose sum is σ = 2171073744. Its totient is φ = 481628160.

The previous prime is 1205111209. The next prime is 1205111251. The reversal of 1205111230 is 321115021.

It is an interprime number because it is at equal distance from previous prime (1205111209) and next prime (1205111251).

It is a super-2 number, since 2×1205111230² = 2904586153344225800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39747 + ... + 63166.

It is an arithmetic number, because the mean of its divisors is an integer number (135692109).

Almost surely, 2^1205111230 is an apocalyptic number.

1205111230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1205111230 is a deficient number, since it is larger than the sum of its proper divisors (965962514).

1205111230 is a wasteful number, since it uses less digits than its factorization.

1205111230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104091.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1205111230 is about 34714.7120109040. The cubic root of 1205111230 is about 1064.1651800152.

Adding to 1205111230 its reverse (321115021), we get a palindrome (1526226251).

The spelling of 1205111230 in words is "one billion, two hundred five million, one hundred eleven thousand, two hundred thirty".