201211120202122 has 8 divisors (see below), whose sum is σ = 301817082341700. Its totient is φ = 100605426088224.

The previous prime is 201211120202087. The next prime is 201211120202201. The reversal of 201211120202122 is 221202021112102.

It can be written as a sum of positive squares in 2 ways, for example, as 189600479663401 + 11610640538721 = 13769549^2 + 3407439^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 201211120202122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65118997 + ... + 68138872.

Almost surely, 2^{201211120202122} is an apocalyptic number.

201211120202122 is a deficient number, since it is larger than the sum of its proper divisors (100605962139578).

201211120202122 is a wasteful number, since it uses less digits than its factorization.

201211120202122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134012840.

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

Adding to 201211120202122 its reverse (221202021112102), we get a palindrome (422413141314224).

The spelling of 201211120202122 in words is "two hundred one trillion, two hundred eleven billion, one hundred twenty million, two hundred two thousand, one hundred twenty-two".