201212012112111 has 128 divisors (see below), whose sum is σ = 400272941537280. Its totient is φ = 96476191257600.

The previous prime is 201212012112091. The next prime is 201212012112151. The reversal of 201212012112111 is 111211210212102.

It is a happy number.

201212012112111 is a `hidden beast` number, since 20 + 1 + 21 + 201 + 211 + 211 + 1 = 666.

It is not a de Polignac number, because 201212012112111 - 2¹⁴ = 201212012095727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201212012112151) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 291032811 + ... + 291723363.

It is an arithmetic number, because the mean of its divisors is an integer number (3127132355760).

Almost surely, 2^{201212012112111} is an apocalyptic number.

201212012112111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

201212012112111 is a deficient number, since it is larger than the sum of its proper divisors (199060929425169).

201212012112111 is a wasteful number, since it uses less digits than its factorization.

201212012112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701374 (or 701368 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 201212012112111 its reverse (111211210212102), we get a palindrome (312423222324213).

The spelling of 201212012112111 in words is "two hundred one trillion, two hundred twelve billion, twelve million, one hundred twelve thousand, one hundred eleven".