201210012221111 has 4 divisors (see below), whose sum is σ = 201213530489424. Its totient is φ = 201206493952800.

The previous prime is 201210012221083. The next prime is 201210012221129. The reversal of 201210012221111 is 111122210012102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201210012221111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201210012221111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201210012421111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1759048370 + ... + 1759162751.

It is an arithmetic number, because the mean of its divisors is an integer number (50303382622356).

Almost surely, 2^{201210012221111} is an apocalyptic number.

201210012221111 is a deficient number, since it is larger than the sum of its proper divisors (3518268313).

201210012221111 is an equidigital number, since it uses as much as digits as its factorization.

201210012221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3518268312.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 201210012221111 its reverse (111122210012102), we get a palindrome (312332222233213).

The spelling of 201210012221111 in words is "two hundred one trillion, two hundred ten billion, twelve million, two hundred twenty-one thousand, one hundred eleven".