1212213012313 has 8 divisors (see below), whose sum is σ = 1213579323720. Its totient is φ = 1210847124480.

The previous prime is 1212213012301. The next prime is 1212213012389. The reversal of 1212213012313 is 3132103122121.

It can be written as a sum of positive squares in 4 ways, for example, as 296924728464 + 915288283849 = 544908^2 + 956707^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1212213012313 - 2²¹ = 1212210915161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212213013313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5806131 + ... + 6011287.

It is an arithmetic number, because the mean of its divisors is an integer number (151697415465).

Almost surely, 2^{1212213012313} is an apocalyptic number.

It is an amenable number.

1212213012313 is a deficient number, since it is larger than the sum of its proper divisors (1366311407).

1212213012313 is a wasteful number, since it uses less digits than its factorization.

1212213012313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211787.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1212213012313 its reverse (3132103122121), we get a palindrome (4344316134434).

The spelling of 1212213012313 in words is "one trillion, two hundred twelve billion, two hundred thirteen million, twelve thousand, three hundred thirteen".