2212221222212 has 6 divisors (see below), whose sum is σ = 3871387138878. Its totient is φ = 1106110611104.

The previous prime is 2212221222173. The next prime is 2212221222229. The reversal of 2212221222212 is 2122221222122.

It can be written as a sum of positive squares in only one way, i.e., 1530896442436 + 681324779776 = 1237294^2 + 825424^2 .

It is a nude number because it is divisible by every one of its digits.

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 as a sum of consecutive naturals, namely, 276527652773 + ... + 276527652780.

It is an arithmetic number, because the mean of its divisors is an integer number (645231189813).

Almost surely, 2^{2212221222212} is an apocalyptic number.

It is an amenable number.

2212221222212 is a deficient number, since it is larger than the sum of its proper divisors (1659165916666).

2212221222212 is a wasteful number, since it uses less digits than its factorization.

2212221222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553055305557 (or 553055305555 counting only the distinct ones).

The product of its digits is 1024, while the sum is 23.

Adding to 2212221222212 its reverse (2122221222122), we get a palindrome (4334442444334).

The spelling of 2212221222212 in words is "two trillion, two hundred twelve billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred twelve".