123456221444 has 12 divisors (see below), whose sum is σ = 216050951004. Its totient is φ = 61727378304.

The previous prime is 123456221401. The next prime is 123456221461. The reversal of 123456221444 is 444122654321.

It can be written as a sum of positive squares in 2 ways, for example, as 74753028100 + 48703193344 = 273410^2 + 220688^2 .

It is a super-2 number, since 2×123456221444² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123456221398 and 123456221407.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 408632 + ... + 643344.

It is an arithmetic number, because the mean of its divisors is an integer number (18004245917).

Almost surely, 2^123456221444 is an apocalyptic number.

It is an amenable number.

123456221444 is a deficient number, since it is larger than the sum of its proper divisors (92594729560).

123456221444 is a wasteful number, since it uses less digits than its factorization.

123456221444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366214 (or 366212 counting only the distinct ones).

The product of its digits is 184320, while the sum is 38.

Adding to 123456221444 its reverse (444122654321), we get a palindrome (567578875765).

The spelling of 123456221444 in words is "one hundred twenty-three billion, four hundred fifty-six million, two hundred twenty-one thousand, four hundred forty-four".