30221834639 has 2 divisors, whose sum is σ = 30221834640. Its totient is φ = 30221834638.

The previous prime is 30221834627. The next prime is 30221834647. The reversal of 30221834639 is 93643812203.

It is a strong prime.

It is an emirp because it is prime and its reverse (93643812203) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30221834639 - 2²⁴ = 30205057423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30221834596 and 30221834605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30221834939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15110917319 + 15110917320.

It is an arithmetic number, because the mean of its divisors is an integer number (15110917320).

Almost surely, 2^30221834639 is an apocalyptic number.

30221834639 is a deficient number, since it is larger than the sum of its proper divisors (1).

30221834639 is an equidigital number, since it uses as much as digits as its factorization.

30221834639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 41.

The spelling of 30221834639 in words is "thirty billion, two hundred twenty-one million, eight hundred thirty-four thousand, six hundred thirty-nine".