210001122212 has 18 divisors (see below), whose sum is σ = 427502284902. Its totient is φ = 90000480864.

The previous prime is 210001122197. The next prime is 210001122223. The reversal of 210001122212 is 212221100012.

It can be written as a sum of positive squares in only one way, i.e., 202476600676 + 7524521536 = 449974^2 + 86744^2 .

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 535716953 + ... + 535717344.

It is an arithmetic number, because the mean of its divisors is an integer number (23750126939).

Almost surely, 2^210001122212 is an apocalyptic number.

It is an amenable number.

210001122212 is an abundant number, since it is smaller than the sum of its proper divisors (217501162690).

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

210001122212 is a wasteful number, since it uses less digits than its factorization.

210001122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071434315 (or 1071434306 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 210001122212 its reverse (212221100012), we get a palindrome (422222222224).

The spelling of 210001122212 in words is "two hundred ten billion, one million, one hundred twenty-two thousand, two hundred twelve".