302241440021 has 4 divisors (see below), whose sum is σ = 302263526412. Its totient is φ = 302219353632.

The previous prime is 302241439963. The next prime is 302241440099. The reversal of 302241440021 is 120044142203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120044142203 = 3181 ⋅37737863.

It can be written as a sum of positive squares in 2 ways, for example, as 294674179921 + 7567260100 = 542839^2 + 86990^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-302241440021 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 (302241440521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11022656 + ... + 11050041.

It is an arithmetic number, because the mean of its divisors is an integer number (75565881603).

Almost surely, 2^302241440021 is an apocalyptic number.

It is an amenable number.

302241440021 is a deficient number, since it is larger than the sum of its proper divisors (22086391).

302241440021 is a wasteful number, since it uses less digits than its factorization.

302241440021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22086390.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 302241440021 its reverse (120044142203), we get a palindrome (422285582224).

The spelling of 302241440021 in words is "three hundred two billion, two hundred forty-one million, four hundred forty thousand, twenty-one".