1213555055333 has 8 divisors (see below), whose sum is σ = 1230683149440. Its totient is φ = 1196427954960.

The previous prime is 1213555055311. The next prime is 1213555055387. The reversal of 1213555055333 is 3335505553121.

It is a happy number.

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 1213555055333 - 2¹² = 1213555051237 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 (1213555055303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2410616 + ... + 2870222.

It is an arithmetic number, because the mean of its divisors is an integer number (153835393680).

Almost surely, 2^{1213555055333} is an apocalyptic number.

It is an amenable number.

1213555055333 is a deficient number, since it is larger than the sum of its proper divisors (17128094107).

1213555055333 is an equidigital number, since it uses as much as digits as its factorization.

1213555055333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496867.

The product of its (nonzero) digits is 506250, while the sum is 41.

The spelling of 1213555055333 in words is "one trillion, two hundred thirteen billion, five hundred fifty-five million, fifty-five thousand, three hundred thirty-three".