1305423521101 has 12 divisors (see below), whose sum is σ = 1530511016448. Its totient is φ = 1110123933912.

The previous prime is 1305423521099. The next prime is 1305423521123. The reversal of 1305423521101 is 1011253245031.

It is not a de Polignac number, because 1305423521101 - 2¹ = 1305423521099 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1305423521101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305423521141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104880771 + ... + 104893216.

It is an arithmetic number, because the mean of its divisors is an integer number (127542584704).

Almost surely, 2^{1305423521101} is an apocalyptic number.

It is an amenable number.

1305423521101 is a deficient number, since it is larger than the sum of its proper divisors (225087495347).

1305423521101 is a wasteful number, since it uses less digits than its factorization.

1305423521101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209774128 (or 209774121 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 1305423521101 its reverse (1011253245031), we get a palindrome (2316676766132).

The spelling of 1305423521101 in words is "one trillion, three hundred five billion, four hundred twenty-three million, five hundred twenty-one thousand, one hundred one".