201211022021210 has 64 divisors (see below), whose sum is σ = 404339274558720. Its totient is φ = 71737613038080.

The previous prime is 201211022021209. The next prime is 201211022021239. The reversal of 201211022021210 is 12120220112102.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 377140907 + ... + 377674046.

It is an arithmetic number, because the mean of its divisors is an integer number (6317801164980).

Almost surely, 2^{201211022021210} is an apocalyptic number.

201211022021210 is an abundant number, since it is smaller than the sum of its proper divisors (203128252537510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201211022021210 is a wasteful number, since it uses less digits than its factorization.

201211022021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754815063.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 201211022021210 its reverse (12120220112102), we get a palindrome (213331242133312).

The spelling of 201211022021210 in words is "two hundred one trillion, two hundred eleven billion, twenty-two million, twenty-one thousand, two hundred ten".