1211200002211 has 4 divisors (see below), whose sum is σ = 1236970215072. Its totient is φ = 1185429789352.

The previous prime is 1211200002179. The next prime is 1211200002293. The reversal of 1211200002211 is 1122000021121.

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

It is a cyclic number.

It is not a de Polignac number, because 1211200002211 - 2⁵ = 1211200002179 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1211200002191 and 1211200002200.

It is not an unprimeable number, because it can be changed into a prime (1211200002611) 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, 12885106360 + ... + 12885106453.

It is an arithmetic number, because the mean of its divisors is an integer number (309242553768).

Almost surely, 2^{1211200002211} is an apocalyptic number.

1211200002211 is a deficient number, since it is larger than the sum of its proper divisors (25770212861).

1211200002211 is an equidigital number, since it uses as much as digits as its factorization.

1211200002211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25770212860.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1211200002211 its reverse (1122000021121), we get a palindrome (2333200023332).

The spelling of 1211200002211 in words is "one trillion, two hundred eleven billion, two hundred million, two thousand, two hundred eleven".