1200012759973 has 4 divisors (see below), whose sum is σ = 1203451192300. Its totient is φ = 1196574327648.

The previous prime is 1200012759971. The next prime is 1200012759983. The reversal of 1200012759973 is 3799572100021.

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 1094279182084 + 105733577889 = 1046078^2 + 325167^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200012759973 - 2¹ = 1200012759971 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200012759971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1719215640 + ... + 1719216337.

It is an arithmetic number, because the mean of its divisors is an integer number (300862798075).

Almost surely, 2^{1200012759973} is an apocalyptic number.

It is an amenable number.

1200012759973 is a deficient number, since it is larger than the sum of its proper divisors (3438432327).

1200012759973 is an equidigital number, since it uses as much as digits as its factorization.

1200012759973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3438432326.

The product of its (nonzero) digits is 238140, while the sum is 46.

Adding to 1200012759973 its reverse (3799572100021), we get a palindrome (4999584859994).

The spelling of 1200012759973 in words is "one trillion, two hundred billion, twelve million, seven hundred fifty-nine thousand, nine hundred seventy-three".