1200312121339 has 2 divisors, whose sum is σ = 1200312121340. Its totient is φ = 1200312121338.

The previous prime is 1200312121313. The next prime is 1200312121369. The reversal of 1200312121339 is 9331212130021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1200312121339 - 2³³ = 1191722186747 is a prime.

It is not a weakly prime, because it can be changed into another prime (1200312121369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600156060669 + 600156060670.

It is an arithmetic number, because the mean of its divisors is an integer number (600156060670).

Almost surely, 2^{1200312121339} is an apocalyptic number.

1200312121339 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200312121339 is an equidigital number, since it uses as much as digits as its factorization.

1200312121339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 28.

The spelling of 1200312121339 in words is "one trillion, two hundred billion, three hundred twelve million, one hundred twenty-one thousand, three hundred thirty-nine".