244142221521 has 8 divisors (see below), whose sum is σ = 355115958624. Its totient is φ = 147964982720.

The previous prime is 244142221517. The next prime is 244142221691. The reversal of 244142221521 is 125122241442.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 244142221521 - 2² = 244142221517 is a prime.

It is not an unprimeable number, because it can be changed into a prime (244142221501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3699124536 + ... + 3699124601.

It is an arithmetic number, because the mean of its divisors is an integer number (44389494828).

Almost surely, 2^244142221521 is an apocalyptic number.

It is an amenable number.

244142221521 is a deficient number, since it is larger than the sum of its proper divisors (110973737103).

244142221521 is a wasteful number, since it uses less digits than its factorization.

244142221521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7398249151.

The product of its digits is 10240, while the sum is 30.

Adding to 244142221521 its reverse (125122241442), we get a palindrome (369264462963).

The spelling of 244142221521 in words is "two hundred forty-four billion, one hundred forty-two million, two hundred twenty-one thousand, five hundred twenty-one".