1200212321001 has 4 divisors (see below), whose sum is σ = 1600283094672. Its totient is φ = 800141547332.

The previous prime is 1200212320943. The next prime is 1200212321003. The reversal of 1200212321001 is 1001232120021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1200212321001 - 2¹¹ = 1200212318953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1200212321003) 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, 200035386831 + ... + 200035386836.

It is an arithmetic number, because the mean of its divisors is an integer number (400070773668).

Almost surely, 2^{1200212321001} is an apocalyptic number.

It is an amenable number.

1200212321001 is a deficient number, since it is larger than the sum of its proper divisors (400070773671).

1200212321001 is an equidigital number, since it uses as much as digits as its factorization.

1200212321001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400070773670.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1200212321001 its reverse (1001232120021), we get a palindrome (2201444441022).

The spelling of 1200212321001 in words is "one trillion, two hundred billion, two hundred twelve million, three hundred twenty-one thousand, one".