302130012221 has 4 divisors (see below), whose sum is σ = 302131210812. Its totient is φ = 302128813632.

The previous prime is 302130012211. The next prime is 302130012269. The reversal of 302130012221 is 122210031203.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 102647188996 + 199482823225 = 320386^2 + 446635^2 .

It is a cyclic number.

It is not a de Polignac number, because 302130012221 - 2²⁶ = 302062903357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 302130012221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (302130012211) 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, 58550 + ... + 779543.

It is an arithmetic number, because the mean of its divisors is an integer number (75532802703).

Almost surely, 2^302130012221 is an apocalyptic number.

It is an amenable number.

302130012221 is a deficient number, since it is larger than the sum of its proper divisors (1198591).

302130012221 is an equidigital number, since it uses as much as digits as its factorization.

302130012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1198590.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 302130012221 its reverse (122210031203), we get a palindrome (424340043424).

The spelling of 302130012221 in words is "three hundred two billion, one hundred thirty million, twelve thousand, two hundred twenty-one".