103235215521 has 16 divisors (see below), whose sum is σ = 139219344000. Its totient is φ = 68040096768.

The previous prime is 103235215507. The next prime is 103235215537. The reversal of 103235215521 is 125512532301.

It is not a de Polignac number, because 103235215521 - 2³⁰ = 102161473697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (103235210521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204741 + ... + 498386.

It is an arithmetic number, because the mean of its divisors is an integer number (8701209000).

Almost surely, 2^103235215521 is an apocalyptic number.

It is an amenable number.

103235215521 is a deficient number, since it is larger than the sum of its proper divisors (35984128479).

103235215521 is a wasteful number, since it uses less digits than its factorization.

103235215521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703688.

The product of its (nonzero) digits is 9000, while the sum is 30.

Adding to 103235215521 its reverse (125512532301), we get a palindrome (228747747822).

The spelling of 103235215521 in words is "one hundred three billion, two hundred thirty-five million, two hundred fifteen thousand, five hundred twenty-one".