1212201202111 has 16 divisors (see below), whose sum is σ = 1288756949760. Its totient is φ = 1136975832000.

The previous prime is 1212201202067. The next prime is 1212201202117. The reversal of 1212201202111 is 1112021022121.

It is a cyclic number.

It is not a de Polignac number, because 1212201202111 - 2⁷ = 1212201201983 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 (1212201202117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35395 + ... + 1557451.

It is an arithmetic number, because the mean of its divisors is an integer number (80547309360).

Almost surely, 2^{1212201202111} is an apocalyptic number.

1212201202111 is a deficient number, since it is larger than the sum of its proper divisors (76555747649).

1212201202111 is a wasteful number, since it uses less digits than its factorization.

1212201202111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1522494.

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

Adding to 1212201202111 its reverse (1112021022121), we get a palindrome (2324222224232).

The spelling of 1212201202111 in words is "one trillion, two hundred twelve billion, two hundred one million, two hundred two thousand, one hundred eleven".