1230000001321 has 32 divisors (see below), whose sum is σ = 1634136860160. Its totient is φ = 898775184384.

The previous prime is 1230000001277. The next prime is 1230000001333. The reversal of 1230000001321 is 1231000000321.

It is not a de Polignac number, because 1230000001321 - 2⁹ = 1230000000809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (1230000001361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10071600 + ... + 10192993.

It is an arithmetic number, because the mean of its divisors is an integer number (51066776880).

Almost surely, 2^{1230000001321} is an apocalyptic number.

It is an amenable number.

1230000001321 is a deficient number, since it is larger than the sum of its proper divisors (404136858839).

1230000001321 is a wasteful number, since it uses less digits than its factorization.

1230000001321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20264665.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 1230000001321 its reverse (1231000000321), we get a palindrome (2461000001642).

The spelling of 1230000001321 in words is "one trillion, two hundred thirty billion, one thousand, three hundred twenty-one".