1212323233213 has 2 divisors, whose sum is σ = 1212323233214. Its totient is φ = 1212323233212.

The previous prime is 1212323233207. The next prime is 1212323233241. The reversal of 1212323233213 is 3123323232121.

It is a happy number.

It is an a-pointer prime, because the next prime (1212323233241) can be obtained adding 1212323233213 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 843792890724 + 368530342489 = 918582^2 + 607067^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212323233213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212323233243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606161616606 + 606161616607.

It is an arithmetic number, because the mean of its divisors is an integer number (606161616607).

Almost surely, 2^{1212323233213} is an apocalyptic number.

It is an amenable number.

1212323233213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212323233213 is an equidigital number, since it uses as much as digits as its factorization.

1212323233213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 28.

Adding to 1212323233213 its reverse (3123323232121), we get a palindrome (4335646465334).

The spelling of 1212323233213 in words is "one trillion, two hundred twelve billion, three hundred twenty-three million, two hundred thirty-three thousand, two hundred thirteen".