135221203411 has 8 divisors (see below), whose sum is σ = 161257584384. Its totient is φ = 110864589000.

The previous prime is 135221203349. The next prime is 135221203471. The reversal of 135221203411 is 114302122531.

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 135221203411 - 2⁷ = 135221203283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135221203471) 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, 419941465 + ... + 419941786.

It is an arithmetic number, because the mean of its divisors is an integer number (20157198048).

Almost surely, 2^135221203411 is an apocalyptic number.

135221203411 is a deficient number, since it is larger than the sum of its proper divisors (26036380973).

135221203411 is an equidigital number, since it uses as much as digits as its factorization.

135221203411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839883281.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 135221203411 its reverse (114302122531), we get a palindrome (249523325942).

The spelling of 135221203411 in words is "one hundred thirty-five billion, two hundred twenty-one million, two hundred three thousand, four hundred eleven".