1200350530551 has 4 divisors (see below), whose sum is σ = 1600467374072. Its totient is φ = 800233687032.

The previous prime is 1200350530517. The next prime is 1200350530553. The reversal of 1200350530551 is 1550350530021.

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

It is not a de Polignac number, because 1200350530551 - 2¹⁰ = 1200350529527 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 (1200350530553) 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, 200058421756 + ... + 200058421761.

It is an arithmetic number, because the mean of its divisors is an integer number (400116843518).

Almost surely, 2^{1200350530551} is an apocalyptic number.

1200350530551 is a deficient number, since it is larger than the sum of its proper divisors (400116843521).

1200350530551 is an equidigital number, since it uses as much as digits as its factorization.

1200350530551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400116843520.

The product of its (nonzero) digits is 11250, while the sum is 30.

The spelling of 1200350530551 in words is "one trillion, two hundred billion, three hundred fifty million, five hundred thirty thousand, five hundred fifty-one".