201220122112210 has 8 divisors (see below), whose sum is σ = 362196219801996. Its totient is φ = 80488048844880.

The previous prime is 201220122112189. The next prime is 201220122112211. The reversal of 201220122112210 is 12211221022102.

It can be written as a sum of positive squares in 2 ways, for example, as 186048808880841 + 15171313231369 = 13639971^2 + 3895037^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (201220122112211) 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, 10061006105601 + ... + 10061006105620.

Almost surely, 2^{201220122112210} is an apocalyptic number.

201220122112210 is a deficient number, since it is larger than the sum of its proper divisors (160976097689786).

201220122112210 is a wasteful number, since it uses less digits than its factorization.

201220122112210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20122012211228.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 201220122112210 its reverse (12211221022102), we get a palindrome (213431343134312).

The spelling of 201220122112210 in words is "two hundred one trillion, two hundred twenty billion, one hundred twenty-two million, one hundred twelve thousand, two hundred ten".