1213201100333 has 2 divisors, whose sum is σ = 1213201100334. Its totient is φ = 1213201100332.

The previous prime is 1213201100281. The next prime is 1213201100359. The reversal of 1213201100333 is 3330011023121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1038579077449 + 174622022884 = 1019107^2 + 417878^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213201100333 - 2²² = 1213196906029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213201160333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606600550166 + 606600550167.

It is an arithmetic number, because the mean of its divisors is an integer number (606600550167).

Almost surely, 2^{1213201100333} is an apocalyptic number.

It is an amenable number.

1213201100333 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213201100333 is an equidigital number, since it uses as much as digits as its factorization.

1213201100333 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 1213201100333 its reverse (3330011023121), we get a palindrome (4543212123454).

The spelling of 1213201100333 in words is "one trillion, two hundred thirteen billion, two hundred one million, one hundred thousand, three hundred thirty-three".