1302012199897 has 2 divisors, whose sum is σ = 1302012199898. Its totient is φ = 1302012199896.

The previous prime is 1302012199889. The next prime is 1302012199933. The reversal of 1302012199897 is 7989912102031.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 706366287936 + 595645911961 = 840456^2 + 771781^2 .

It is a cyclic number.

It is not a de Polignac number, because 1302012199897 - 2³ = 1302012199889 is a prime.

It is not a weakly prime, because it can be changed into another prime (1302012199847) 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 as a sum of consecutive naturals, namely, 651006099948 + 651006099949.

It is an arithmetic number, because the mean of its divisors is an integer number (651006099949).

Almost surely, 2^{1302012199897} is an apocalyptic number.

It is an amenable number.

1302012199897 is a deficient number, since it is larger than the sum of its proper divisors (1).

1302012199897 is an equidigital number, since it uses as much as digits as its factorization.

1302012199897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 489888, while the sum is 52.

The spelling of 1302012199897 in words is "one trillion, three hundred two billion, twelve million, one hundred ninety-nine thousand, eight hundred ninety-seven".