1302011121 has 4 divisors (see below), whose sum is σ = 1736014832. Its totient is φ = 868007412.

The previous prime is 1302011107. The next prime is 1302011131. The reversal of 1302011121 is 1211102031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1302011121 - 2⁵ = 1302011089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1302011097 and 1302011106.

It is not an unprimeable number, because it can be changed into a prime (1302011131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217001851 + ... + 217001856.

It is an arithmetic number, because the mean of its divisors is an integer number (434003708).

Almost surely, 2^1302011121 is an apocalyptic number.

It is an amenable number.

1302011121 is a deficient number, since it is larger than the sum of its proper divisors (434003711).

1302011121 is an equidigital number, since it uses as much as digits as its factorization.

1302011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434003710.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 1302011121 is about 36083.3912070360. The cubic root of 1302011121 is about 1091.9553938964.

Adding to 1302011121 its reverse (1211102031), we get a palindrome (2513113152).

The spelling of 1302011121 in words is "one billion, three hundred two million, eleven thousand, one hundred twenty-one".