201212221002 has 24 divisors (see below), whose sum is σ = 435761380224. Its totient is φ = 61911452304.

The previous prime is 201212220997. The next prime is 201212221003. The reversal of 201212221002 is 200122212102.

It is not an unprimeable number, because it can be changed into a prime (201212221003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99216058 + ... + 99218085.

It is an arithmetic number, because the mean of its divisors is an integer number (18156724176).

Almost surely, 2^201212221002 is an apocalyptic number.

201212221002 is an abundant number, since it is smaller than the sum of its proper divisors (234549159222).

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

201212221002 is a wasteful number, since it uses less digits than its factorization.

201212221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198434174 (or 198434161 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 201212221002 its reverse (200122212102), we get a palindrome (401334433104).

The spelling of 201212221002 in words is "two hundred one billion, two hundred twelve million, two hundred twenty-one thousand, two".