1212413113 has 4 divisors (see below), whose sum is σ = 1212511860. Its totient is φ = 1212314368.

The previous prime is 1212413101. The next prime is 1212413119. The reversal of 1212413113 is 3113142121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 879241104 + 333172009 = 29652^2 + 18253^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212413113 - 2⁹ = 1212412601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212413119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27820 + ... + 56557.

It is an arithmetic number, because the mean of its divisors is an integer number (303127965).

Almost surely, 2^1212413113 is an apocalyptic number.

It is an amenable number.

1212413113 is a deficient number, since it is larger than the sum of its proper divisors (98747).

1212413113 is an equidigital number, since it uses as much as digits as its factorization.

1212413113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98746.

The product of its digits is 144, while the sum is 19.

The square root of 1212413113 is about 34819.7230459979. The cubic root of 1212413113 is about 1066.3101461609.

Adding to 1212413113 its reverse (3113142121), we get a palindrome (4325555234).

The spelling of 1212413113 in words is "one billion, two hundred twelve million, four hundred thirteen thousand, one hundred thirteen".