2243404201221 has 12 divisors (see below), whose sum is σ = 3431088778572. Its totient is φ = 1407626165376.

The previous prime is 2243404201201. The next prime is 2243404201303. The reversal of 2243404201221 is 1221024043422.

It is a happy number.

2243404201221 is a `hidden beast` number, since 2 + 2 + 434 + 0 + 4 + 2 + 0 + 1 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 716909357025 + 1526494844196 = 846705^2 + 1235514^2 .

It is not a de Polignac number, because 2243404201221 - 2¹⁰ = 2243404200197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2243404201201) 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, 7331386126 + ... + 7331386431.

It is an arithmetic number, because the mean of its divisors is an integer number (285924064881).

Almost surely, 2^{2243404201221} is an apocalyptic number.

It is an amenable number.

2243404201221 is a deficient number, since it is larger than the sum of its proper divisors (1187684577351).

2243404201221 is a wasteful number, since it uses less digits than its factorization.

2243404201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14662772580 (or 14662772577 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 2243404201221 its reverse (1221024043422), we get a palindrome (3464428244643).

The spelling of 2243404201221 in words is "two trillion, two hundred forty-three billion, four hundred four million, two hundred one thousand, two hundred twenty-one".