1212104113 has 4 divisors (see below), whose sum is σ = 1322295408. Its totient is φ = 1101912820.

The previous prime is 1212104057. The next prime is 1212104141. The reversal of 1212104113 is 3114012121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1212104113 - 2⁹ = 1212103601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212104713) 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 3 ways as a sum of consecutive naturals, for example, 55095631 + ... + 55095652.

It is an arithmetic number, because the mean of its divisors is an integer number (330573852).

Almost surely, 2^1212104113 is an apocalyptic number.

It is an amenable number.

1212104113 is a deficient number, since it is larger than the sum of its proper divisors (110191295).

1212104113 is a wasteful number, since it uses less digits than its factorization.

1212104113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110191294.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1212104113 is about 34815.2856228410. The cubic root of 1212104113 is about 1066.2195505745.

Adding to 1212104113 its reverse (3114012121), we get a palindrome (4326116234).

The spelling of 1212104113 in words is "one billion, two hundred twelve million, one hundred four thousand, one hundred thirteen".