1302210322121 has 16 divisors (see below), whose sum is σ = 1313925402384. Its totient is φ = 1290529250304.

The previous prime is 1302210322109. The next prime is 1302210322151. The reversal of 1302210322121 is 1212230122031.

It can be written as a sum of positive squares in 8 ways, for example, as 38665716496 + 1263544605625 = 196636^2 + 1124075^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1302210322121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1302210322093 and 1302210322102.

It is not an unprimeable number, because it can be changed into a prime (1302210322151) 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, 386067191 + ... + 386070563.

It is an arithmetic number, because the mean of its divisors is an integer number (82120337649).

Almost surely, 2^{1302210322121} is an apocalyptic number.

It is an amenable number.

1302210322121 is a deficient number, since it is larger than the sum of its proper divisors (11715080263).

1302210322121 is a wasteful number, since it uses less digits than its factorization.

1302210322121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7420.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1302210322121 its reverse (1212230122031), we get a palindrome (2514440444152).

The spelling of 1302210322121 in words is "one trillion, three hundred two billion, two hundred ten million, three hundred twenty-two thousand, one hundred twenty-one".