2220001212212 has 18 divisors (see below), whose sum is σ = 4519288182402. Its totient is φ = 951429090864.

The previous prime is 2220001212139. The next prime is 2220001212223. The reversal of 2220001212212 is 2122121000222.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2020474616356 + 199526595856 = 1421434^2 + 446684^2 .

It is a congruent number.

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, 5663268203 + ... + 5663268594.

It is an arithmetic number, because the mean of its divisors is an integer number (251071565689).

Almost surely, 2^{2220001212212} is an apocalyptic number.

It is an amenable number.

2220001212212 is an abundant number, since it is smaller than the sum of its proper divisors (2299286970190).

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

2220001212212 is a wasteful number, since it uses less digits than its factorization.

2220001212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11326536815 (or 11326536806 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2220001212212 its reverse (2122121000222), we get a palindrome (4342122212434).

The spelling of 2220001212212 in words is "two trillion, two hundred twenty billion, one million, two hundred twelve thousand, two hundred twelve".