1212136673 has 32 divisors (see below), whose sum is σ = 1460858880. Its totient is φ = 993384000.

The previous prime is 1212136663. The next prime is 1212136699. The reversal of 1212136673 is 3766312121.

It is a cyclic number.

It is not a de Polignac number, because 1212136673 - 2⁶ = 1212136609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212136663) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 393686 + ... + 396752.

It is an arithmetic number, because the mean of its divisors is an integer number (45651840).

Almost surely, 2^1212136673 is an apocalyptic number.

It is an amenable number.

1212136673 is a deficient number, since it is larger than the sum of its proper divisors (248722207).

1212136673 is a wasteful number, since it uses less digits than its factorization.

1212136673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3189.

The product of its digits is 9072, while the sum is 32.

The square root of 1212136673 is about 34815.7532303984. The cubic root of 1212136673 is about 1066.2290975536.

Adding to 1212136673 its reverse (3766312121), we get a palindrome (4978448794).

The spelling of 1212136673 in words is "one billion, two hundred twelve million, one hundred thirty-six thousand, six hundred seventy-three".