1200212201 has 4 divisors (see below), whose sum is σ = 1208973012. Its totient is φ = 1191451392.

The previous prime is 1200212191. The next prime is 1200212203. The reversal of 1200212201 is 1022120021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1022120021 = 13 ⋅78624617.

It can be written as a sum of positive squares in 2 ways, for example, as 928786576 + 271425625 = 30476^2 + 16475^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200212201 - 2¹⁴ = 1200195817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200212203) 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, 4380200 + ... + 4380473.

It is an arithmetic number, because the mean of its divisors is an integer number (302243253).

Almost surely, 2^1200212201 is an apocalyptic number.

It is an amenable number.

1200212201 is a deficient number, since it is larger than the sum of its proper divisors (8760811).

1200212201 is an equidigital number, since it uses as much as digits as its factorization.

1200212201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8760810.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1200212201 is about 34644.0788735969. The cubic root of 1200212201 is about 1062.7212036050.

Adding to 1200212201 its reverse (1022120021), we get a palindrome (2222332222).

The spelling of 1200212201 in words is "one billion, two hundred million, two hundred twelve thousand, two hundred one".