2220423203444 has 6 divisors (see below), whose sum is σ = 3885740606034. Its totient is φ = 1110211601720.

The previous prime is 2220423203441. The next prime is 2220423203461. The reversal of 2220423203444 is 4443023240222.

It can be written as a sum of positive squares in only one way, i.e., 1150878384100 + 1069544819344 = 1072790^2 + 1034188^2 .

It is a super-2 number, since 2×2220423203444² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2220423203444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220423203441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277552900427 + ... + 277552900434.

It is an arithmetic number, because the mean of its divisors is an integer number (647623434339).

Almost surely, 2^{2220423203444} is an apocalyptic number.

It is an amenable number.

2220423203444 is a deficient number, since it is larger than the sum of its proper divisors (1665317402590).

2220423203444 is a wasteful number, since it uses less digits than its factorization.

2220423203444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555105800865 (or 555105800863 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 32.

Adding to 2220423203444 its reverse (4443023240222), we get a palindrome (6663446443666).

The spelling of 2220423203444 in words is "two trillion, two hundred twenty billion, four hundred twenty-three million, two hundred three thousand, four hundred forty-four".