244420255421 has 16 divisors (see below), whose sum is σ = 258585955200. Its totient is φ = 230550566400.

The previous prime is 244420255403. The next prime is 244420255433. The reversal of 244420255421 is 124552024442.

It is a cyclic number.

It is not a de Polignac number, because 244420255421 - 2¹⁸ = 244419993277 is a prime.

It is a super-2 number, since 2×244420255421² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244420252421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14849246 + ... + 14865696.

It is an arithmetic number, because the mean of its divisors is an integer number (16161622200).

Almost surely, 2^244420255421 is an apocalyptic number.

It is an amenable number.

244420255421 is a deficient number, since it is larger than the sum of its proper divisors (14165699779).

244420255421 is a wasteful number, since it uses less digits than its factorization.

244420255421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25396.

The product of its (nonzero) digits is 102400, while the sum is 35.

Adding to 244420255421 its reverse (124552024442), we get a palindrome (368972279863).

The spelling of 244420255421 in words is "two hundred forty-four billion, four hundred twenty million, two hundred fifty-five thousand, four hundred twenty-one".