135333313210321 has 4 divisors (see below), whose sum is σ = 135333649472112. Its totient is φ = 135332976948532.

The previous prime is 135333313210297. The next prime is 135333313210331. The reversal of 135333313210321 is 123012313333531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 135333313210321 - 2¹⁷ = 135333313079249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135333313210331) 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, 167526475 + ... + 168332368.

It is an arithmetic number, because the mean of its divisors is an integer number (33833412368028).

Almost surely, 2^{135333313210321} is an apocalyptic number.

It is an amenable number.

135333313210321 is a deficient number, since it is larger than the sum of its proper divisors (336261791).

135333313210321 is an equidigital number, since it uses as much as digits as its factorization.

135333313210321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336261790.

The product of its (nonzero) digits is 43740, while the sum is 34.

Adding to 135333313210321 its reverse (123012313333531), we get a palindrome (258345626543852).

The spelling of 135333313210321 in words is "one hundred thirty-five trillion, three hundred thirty-three billion, three hundred thirteen million, two hundred ten thousand, three hundred twenty-one".