1013003251521 has 8 divisors (see below), whose sum is σ = 1350676894464. Its totient is φ = 675332554800.

The previous prime is 1013003251511. The next prime is 1013003251523. The reversal of 1013003251521 is 1251523003101.

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

It is not a de Polignac number, because 1013003251521 - 2⁵ = 1013003251489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1013003251491 and 1013003251500.

It is not an unprimeable number, because it can be changed into a prime (1013003251523) 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, 257296 + ... + 1446446.

It is an arithmetic number, because the mean of its divisors is an integer number (168834611808).

Almost surely, 2^{1013003251521} is an apocalyptic number.

It is an amenable number.

1013003251521 is a deficient number, since it is larger than the sum of its proper divisors (337673642943).

1013003251521 is a wasteful number, since it uses less digits than its factorization.

1013003251521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1473111.

The product of its (nonzero) digits is 900, while the sum is 24.

Adding to 1013003251521 its reverse (1251523003101), we get a palindrome (2264526254622).

The spelling of 1013003251521 in words is "one trillion, thirteen billion, three million, two hundred fifty-one thousand, five hundred twenty-one".