3011222001221 has 12 divisors (see below), whose sum is σ = 3568941597132. Its totient is φ = 2532348419328.

The previous prime is 3011222001097. The next prime is 3011222001223. The reversal of 3011222001221 is 1221002221103.

3011222001221 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2094532562500 + 916689438721 = 1447250^2 + 957439^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3011222001221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3011222001221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3011222001223) 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, 579747500 + ... + 579752693.

It is an arithmetic number, because the mean of its divisors is an integer number (297411799761).

Almost surely, 2^{3011222001221} is an apocalyptic number.

It is an amenable number.

3011222001221 is a deficient number, since it is larger than the sum of its proper divisors (557719595911).

3011222001221 is a wasteful number, since it uses less digits than its factorization.

3011222001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159500260 (or 1159500253 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 3011222001221 its reverse (1221002221103), we get a palindrome (4232224222324).

The spelling of 3011222001221 in words is "three trillion, eleven billion, two hundred twenty-two million, one thousand, two hundred twenty-one".