30502355042221 has 2 divisors, whose sum is σ = 30502355042222. Its totient is φ = 30502355042220.

The previous prime is 30502355042209. The next prime is 30502355042279. The reversal of 30502355042221 is 12224055320503.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15726895461225 + 14775459580996 = 3965715^2 + 3843886^2 .

It is a cyclic number.

It is not a de Polignac number, because 30502355042221 - 2⁹ = 30502355041709 is a prime.

It is a super-3 number, since 3×30502355042221³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30502355045221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15251177521110 + 15251177521111.

It is an arithmetic number, because the mean of its divisors is an integer number (15251177521111).

Almost surely, 2^{30502355042221} is an apocalyptic number.

It is an amenable number.

30502355042221 is a deficient number, since it is larger than the sum of its proper divisors (1).

30502355042221 is an equidigital number, since it uses as much as digits as its factorization.

30502355042221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72000, while the sum is 34.

The spelling of 30502355042221 in words is "thirty trillion, five hundred two billion, three hundred fifty-five million, forty-two thousand, two hundred twenty-one".