1013535221 has 8 divisors (see below), whose sum is σ = 1069629600. Its totient is φ = 957715920.

The previous prime is 1013535203. The next prime is 1013535283. The reversal of 1013535221 is 1225353101.

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 1013535221 - 2¹⁸ = 1013273077 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 (1013531221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61175 + ... + 75956.

It is an arithmetic number, because the mean of its divisors is an integer number (133703700).

Almost surely, 2^1013535221 is an apocalyptic number.

It is an amenable number.

1013535221 is a deficient number, since it is larger than the sum of its proper divisors (56094379).

1013535221 is a wasteful number, since it uses less digits than its factorization.

1013535221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137539.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 1013535221 is about 31836.0679261746. The cubic root of 1013535221 is about 1004.4915362317.

Adding to 1013535221 its reverse (1225353101), we get a palindrome (2238888322).

The spelling of 1013535221 in words is "one billion, thirteen million, five hundred thirty-five thousand, two hundred twenty-one".