1302322212121 has 12 divisors (see below), whose sum is σ = 1539781434660. Its totient is φ = 1097976569760.

The previous prime is 1302322212101. The next prime is 1302322212143. The reversal of 1302322212121 is 1212122232031.

It can be written as a sum of positive squares in 2 ways, for example, as 461497400896 + 840824811225 = 679336^2 + 916965^2 .

It is not a de Polignac number, because 1302322212121 - 2²⁵ = 1302288657689 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1302322212092 and 1302322212101.

It is not an unprimeable number, because it can be changed into a prime (1302322212101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 217849506 + ... + 217855483.

It is an arithmetic number, because the mean of its divisors is an integer number (128315119555).

Almost surely, 2^{1302322212121} is an apocalyptic number.

It is an amenable number.

1302322212121 is a deficient number, since it is larger than the sum of its proper divisors (237459222539).

1302322212121 is an equidigital number, since it uses as much as digits as its factorization.

1302322212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435705064 (or 435705057 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1302322212121 its reverse (1212122232031), we get a palindrome (2514444444152).

The spelling of 1302322212121 in words is "one trillion, three hundred two billion, three hundred twenty-two million, two hundred twelve thousand, one hundred twenty-one".