1223144204444 has 12 divisors (see below), whose sum is σ = 2146670954904. Its totient is φ = 609809645904.

The previous prime is 1223144204441. The next prime is 1223144204509. The reversal of 1223144204444 is 4444024413221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223144204441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 440612519 + ... + 440615294.

It is an arithmetic number, because the mean of its divisors is an integer number (178889246242).

Almost surely, 2^{1223144204444} is an apocalyptic number.

It is an amenable number.

1223144204444 is a deficient number, since it is larger than the sum of its proper divisors (923526750460).

1223144204444 is a wasteful number, since it uses less digits than its factorization.

1223144204444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881228164 (or 881228162 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 35.

Adding to 1223144204444 its reverse (4444024413221), we get a palindrome (5667168617665).

The spelling of 1223144204444 in words is "one trillion, two hundred twenty-three billion, one hundred forty-four million, two hundred four thousand, four hundred forty-four".