201212200021210 has 128 divisors (see below), whose sum is σ = 440071408719360. Its totient is φ = 64701721728000.

The previous prime is 201212200021207. The next prime is 201212200021211. The reversal of 201212200021210 is 12120002212102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (201212200021211) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1254696352 + ... + 1254856708.

It is an arithmetic number, because the mean of its divisors is an integer number (3438057880620).

Almost surely, 2^{201212200021210} is an apocalyptic number.

201212200021210 is an abundant number, since it is smaller than the sum of its proper divisors (238859208698150).

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

201212200021210 is a wasteful number, since it uses less digits than its factorization.

201212200021210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169832.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 201212200021210 its reverse (12120002212102), we get a palindrome (213332202233312).

The spelling of 201212200021210 in words is "two hundred one trillion, two hundred twelve billion, two hundred million, twenty-one thousand, two hundred ten".