1212200212111 has 6 divisors (see below), whose sum is σ = 1410110450880. Its totient is φ = 1039028753196.

The previous prime is 1212200212109. The next prime is 1212200212117. The reversal of 1212200212111 is 1112120022121.

It is not a de Polignac number, because 1212200212111 - 2¹ = 1212200212109 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 (1212200212117) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12369389871 + ... + 12369389968.

It is an arithmetic number, because the mean of its divisors is an integer number (235018408480).

Almost surely, 2^{1212200212111} is an apocalyptic number.

1212200212111 is a deficient number, since it is larger than the sum of its proper divisors (197910238769).

1212200212111 is an equidigital number, since it uses as much as digits as its factorization.

1212200212111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24738779853 (or 24738779846 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1212200212111 its reverse (1112120022121), we get a palindrome (2324320234232).

The spelling of 1212200212111 in words is "one trillion, two hundred twelve billion, two hundred million, two hundred twelve thousand, one hundred eleven".