201212001102111 has 4 divisors (see below), whose sum is σ = 268282668136152. Its totient is φ = 134141334068072.

The previous prime is 201212001102109. The next prime is 201212001102131. The reversal of 201212001102111 is 111201100212102.

It is a happy number.

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 201212001102111 - 2¹ = 201212001102109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201212001102131) 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 3 ways as a sum of consecutive naturals, for example, 33535333517016 + ... + 33535333517021.

It is an arithmetic number, because the mean of its divisors is an integer number (67070667034038).

Almost surely, 2^{201212001102111} is an apocalyptic number.

201212001102111 is a deficient number, since it is larger than the sum of its proper divisors (67070667034041).

201212001102111 is an equidigital number, since it uses as much as digits as its factorization.

201212001102111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67070667034040.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 201212001102111 its reverse (111201100212102), we get a palindrome (312413101314213).

The spelling of 201212001102111 in words is "two hundred one trillion, two hundred twelve billion, one million, one hundred two thousand, one hundred eleven".