1230521105 has 8 divisors (see below), whose sum is σ = 1610864064. Its totient is φ = 894924400.

The previous prime is 1230521059. The next prime is 1230521179. The reversal of 1230521105 is 5011250321.

It is a happy number.

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

It is not a de Polignac number, because 1230521105 - 2²⁶ = 1163412241 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11186501 + ... + 11186610.

It is an arithmetic number, because the mean of its divisors is an integer number (201358008).

Almost surely, 2^1230521105 is an apocalyptic number.

It is an amenable number.

1230521105 is a deficient number, since it is larger than the sum of its proper divisors (380342959).

1230521105 is a wasteful number, since it uses less digits than its factorization.

1230521105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22373127.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1230521105 is about 35078.7842577248. The cubic root of 1230521105 is about 1071.5925581930.

Adding to 1230521105 its reverse (5011250321), we get a palindrome (6241771426).

The spelling of 1230521105 in words is "one billion, two hundred thirty million, five hundred twenty-one thousand, one hundred five".