1200222220211 has 16 divisors (see below), whose sum is σ = 1382877923328. Its totient is φ = 1020373598400.

The previous prime is 1200222220189. The next prime is 1200222220213. The reversal of 1200222220211 is 1120222220021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1200222220211 - 2²² = 1200218025907 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1200222220211.

It is not an unprimeable number, because it can be changed into a prime (1200222220213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1412126 + ... + 2096316.

It is an arithmetic number, because the mean of its divisors is an integer number (86429870208).

Almost surely, 2^{1200222220211} is an apocalyptic number.

1200222220211 is a deficient number, since it is larger than the sum of its proper divisors (182655703117).

1200222220211 is a wasteful number, since it uses less digits than its factorization.

1200222220211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686242.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1200222220211 its reverse (1120222220021), we get a palindrome (2320444440232).

The spelling of 1200222220211 in words is "one trillion, two hundred billion, two hundred twenty-two million, two hundred twenty thousand, two hundred eleven".