1421322421444 has 6 divisors (see below), whose sum is σ = 2487314237534. Its totient is φ = 710661210720.

The previous prime is 1421322421423. The next prime is 1421322421481. The reversal of 1421322421444 is 4441242231241.

It can be written as a sum of positive squares in only one way, i.e., 1363144981444 + 58177440000 = 1167538^2 + 241200^2 .

It is an unprimeable number.

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, 177665302677 + ... + 177665302684.

Almost surely, 2^{1421322421444} is an apocalyptic number.

It is an amenable number.

1421322421444 is a deficient number, since it is larger than the sum of its proper divisors (1065991816090).

1421322421444 is a wasteful number, since it uses less digits than its factorization.

1421322421444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355330605365 (or 355330605363 counting only the distinct ones).

The product of its digits is 49152, while the sum is 34.

Adding to 1421322421444 its reverse (4441242231241), we get a palindrome (5862564652685).

The spelling of 1421322421444 in words is "one trillion, four hundred twenty-one billion, three hundred twenty-two million, four hundred twenty-one thousand, four hundred forty-four".