1212334013 has 4 divisors (see below), whose sum is σ = 1322546208. Its totient is φ = 1102121820.

The previous prime is 1212333943. The next prime is 1212334037. The reversal of 1212334013 is 3104332121.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3104332121 = 11 ⋅282212011.

It is a cyclic number.

It is not a de Polignac number, because 1212334013 - 2⁸ = 1212333757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212384013) 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, 55106081 + ... + 55106102.

It is an arithmetic number, because the mean of its divisors is an integer number (330636552).

Almost surely, 2^1212334013 is an apocalyptic number.

It is an amenable number.

1212334013 is a deficient number, since it is larger than the sum of its proper divisors (110212195).

1212334013 is a wasteful number, since it uses less digits than its factorization.

1212334013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110212194.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1212334013 is about 34818.5871769663. The cubic root of 1212334013 is about 1066.2869563296.

Adding to 1212334013 its reverse (3104332121), we get a palindrome (4316666134).

The spelling of 1212334013 in words is "one billion, two hundred twelve million, three hundred thirty-four thousand, thirteen".