302443142221 has 48 divisors (see below), whose sum is σ = 343141710912. Its totient is φ = 266219331840.

The previous prime is 302443142189. The next prime is 302443142293. The reversal of 302443142221 is 122241344203.

It is not a de Polignac number, because 302443142221 - 2⁵ = 302443142189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 302443142221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (302443142321) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 384298390 + ... + 384299176.

It is an arithmetic number, because the mean of its divisors is an integer number (7148785644).

Almost surely, 2^302443142221 is an apocalyptic number.

It is an amenable number.

302443142221 is a deficient number, since it is larger than the sum of its proper divisors (40698568691).

302443142221 is a wasteful number, since it uses less digits than its factorization.

302443142221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402 (or 1391 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 302443142221 its reverse (122241344203), we get a palindrome (424684486424).

The spelling of 302443142221 in words is "three hundred two billion, four hundred forty-three million, one hundred forty-two thousand, two hundred twenty-one".