135221141 has 8 divisors (see below), whose sum is σ = 148061568. Its totient is φ = 122472000.

The previous prime is 135221089. The next prime is 135221147. The reversal of 135221141 is 141122531.

135221141 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135221141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135221147) 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, 19700 + ... + 25661.

It is an arithmetic number, because the mean of its divisors is an integer number (18507696).

Almost surely, 2^135221141 is an apocalyptic number.

135221141 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

135221141 is a deficient number, since it is larger than the sum of its proper divisors (12840427).

135221141 is a wasteful number, since it uses less digits than its factorization.

135221141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45643.

The product of its digits is 240, while the sum is 20.

The square root of 135221141 is about 11628.4625381002. The cubic root of 135221141 is about 513.2727391887.

Adding to 135221141 its reverse (141122531), we get a palindrome (276343672).

The spelling of 135221141 in words is "one hundred thirty-five million, two hundred twenty-one thousand, one hundred forty-one".