1302212123017 has 4 divisors (see below), whose sum is σ = 1402382286340. Its totient is φ = 1202041959696.

The previous prime is 1302212122979. The next prime is 1302212123029. The reversal of 1302212123017 is 7103212122031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 57077510281 + 1245134612736 = 238909^2 + 1115856^2 .

It is a cyclic number.

It is not a de Polignac number, because 1302212123017 - 2³¹ = 1300064639369 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1302212122982 and 1302212123000.

It is not an unprimeable number, because it can be changed into a prime (1302212123117) 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 3 ways as a sum of consecutive naturals, for example, 50085081642 + ... + 50085081667.

It is an arithmetic number, because the mean of its divisors is an integer number (350595571585).

Almost surely, 2^{1302212123017} is an apocalyptic number.

It is an amenable number.

1302212123017 is a deficient number, since it is larger than the sum of its proper divisors (100170163323).

1302212123017 is a wasteful number, since it uses less digits than its factorization.

1302212123017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100170163322.

The product of its (nonzero) digits is 1008, while the sum is 25.

Adding to 1302212123017 its reverse (7103212122031), we get a palindrome (8405424245048).

The spelling of 1302212123017 in words is "one trillion, three hundred two billion, two hundred twelve million, one hundred twenty-three thousand, seventeen".