201211222210210 has 16 divisors (see below), whose sum is σ = 365502954108600. Its totient is φ = 79746099077376.

The previous prime is 201211222210157. The next prime is 201211222210211. The reversal of 201211222210210 is 12012222112102.

It can be written as a sum of positive squares in 4 ways, for example, as 171185063580441 + 30026158629769 = 13083771^2 + 5479613^2 .

It is not an unprimeable number, because it can be changed into a prime (201211222210211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92298724695 + ... + 92298726874.

Almost surely, 2^{201211222210210} is an apocalyptic number.

201211222210210 is a deficient number, since it is larger than the sum of its proper divisors (164291731898390).

201211222210210 is a wasteful number, since it uses less digits than its factorization.

201211222210210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184597451685.

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

Adding to 201211222210210 its reverse (12012222112102), we get a palindrome (213223444322312).

The spelling of 201211222210210 in words is "two hundred one trillion, two hundred eleven billion, two hundred twenty-two million, two hundred ten thousand, two hundred ten".