1211342242211 has 8 divisors (see below), whose sum is σ = 1228443231744. Its totient is φ = 1194242359240.

The previous prime is 1211342242193. The next prime is 1211342242237. The reversal of 1211342242211 is 1122422431121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211342242211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211342242811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2067380 + ... + 2587806.

It is an arithmetic number, because the mean of its divisors is an integer number (153555403968).

Almost surely, 2^{1211342242211} is an apocalyptic number.

1211342242211 is a deficient number, since it is larger than the sum of its proper divisors (17100989533).

1211342242211 is an equidigital number, since it uses as much as digits as its factorization.

1211342242211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553281.

The product of its digits is 1536, while the sum is 26.

Adding to 1211342242211 its reverse (1122422431121), we get a palindrome (2333764673332).

The spelling of 1211342242211 in words is "one trillion, two hundred eleven billion, three hundred forty-two million, two hundred forty-two thousand, two hundred eleven".