1421202242444 has 12 divisors (see below), whose sum is σ = 2490170642568. Its totient is φ = 709724916000.

The previous prime is 1421202242441. The next prime is 1421202242461. The reversal of 1421202242444 is 4442422021241.

It is a self number, because there is not a number n which added to its sum of digits gives 1421202242444.

It is not an unprimeable number, because it can be changed into a prime (1421202242441) 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 in 3 ways as a sum of consecutive naturals, for example, 219047657 + ... + 219054144.

It is an arithmetic number, because the mean of its divisors is an integer number (207514220214).

Almost surely, 2^{1421202242444} is an apocalyptic number.

It is an amenable number.

1421202242444 is a deficient number, since it is larger than the sum of its proper divisors (1068968400124).

1421202242444 is a wasteful number, since it uses less digits than its factorization.

1421202242444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438102616 (or 438102614 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 32.

Adding to 1421202242444 its reverse (4442422021241), we get a palindrome (5863624263685).

The spelling of 1421202242444 in words is "one trillion, four hundred twenty-one billion, two hundred two million, two hundred forty-two thousand, four hundred forty-four".