1200201200221 has 4 divisors (see below), whose sum is σ = 1200309503392. Its totient is φ = 1200092897052.

The previous prime is 1200201200201. The next prime is 1200201200227. The reversal of 1200201200221 is 1220021020021.

It is a happy number.

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 1200201200221 - 2⁵ = 1200201200189 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 (1200201200227) 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, 54134961 + ... + 54157126.

It is an arithmetic number, because the mean of its divisors is an integer number (300077375848).

Almost surely, 2^{1200201200221} is an apocalyptic number.

It is an amenable number.

1200201200221 is a deficient number, since it is larger than the sum of its proper divisors (108303171).

1200201200221 is a wasteful number, since it uses less digits than its factorization.

1200201200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108303170.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1200201200221 its reverse (1220021020021), we get a palindrome (2420222220242).

The spelling of 1200201200221 in words is "one trillion, two hundred billion, two hundred one million, two hundred thousand, two hundred twenty-one".