424222142012221 has 8 divisors (see below), whose sum is σ = 491653830582144. Its totient is φ = 358497584798640.

The previous prime is 424222142012197. The next prime is 424222142012287. The reversal of 424222142012221 is 122210241222424.

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

It is a de Polignac number, because none of the positive numbers 2^k-424222142012221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424222142012021) 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, 426782838550 + ... + 426782839543.

It is an arithmetic number, because the mean of its divisors is an integer number (61456728822768).

Almost surely, 2^{424222142012221} is an apocalyptic number.

It is an amenable number.

424222142012221 is a deficient number, since it is larger than the sum of its proper divisors (67431688569923).

424222142012221 is an equidigital number, since it uses as much as digits as its factorization.

424222142012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853565678171.

The product of its (nonzero) digits is 16384, while the sum is 31.

Adding to 424222142012221 its reverse (122210241222424), we get a palindrome (546432383234645).

The spelling of 424222142012221 in words is "four hundred twenty-four trillion, two hundred twenty-two billion, one hundred forty-two million, twelve thousand, two hundred twenty-one".