1302144203221 has 16 divisors (see below), whose sum is σ = 1349650512000. Its totient is φ = 1254812563648.

The previous prime is 1302144203207. The next prime is 1302144203231. The reversal of 1302144203221 is 1223024412031.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1302144203221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1302144203231) 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, 135311016 + ... + 135320638.

It is an arithmetic number, because the mean of its divisors is an integer number (84353157000).

Almost surely, 2^{1302144203221} is an apocalyptic number.

It is an amenable number.

1302144203221 is a deficient number, since it is larger than the sum of its proper divisors (47506308779).

1302144203221 is an equidigital number, since it uses as much as digits as its factorization.

1302144203221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18188.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 1302144203221 its reverse (1223024412031), we get a palindrome (2525168615252).

The spelling of 1302144203221 in words is "one trillion, three hundred two billion, one hundred forty-four million, two hundred three thousand, two hundred twenty-one".