30422256421 has 2 divisors, whose sum is σ = 30422256422. Its totient is φ = 30422256420.

The previous prime is 30422256419. The next prime is 30422256461. The reversal of 30422256421 is 12465222403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21341119396 + 9081137025 = 146086^2 + 95295^2 .

It is a cyclic number.

It is not a de Polignac number, because 30422256421 - 2¹ = 30422256419 is a prime.

Together with 30422256419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30422256461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15211128210 + 15211128211.

It is an arithmetic number, because the mean of its divisors is an integer number (15211128211).

Almost surely, 2^30422256421 is an apocalyptic number.

It is an amenable number.

30422256421 is a deficient number, since it is larger than the sum of its proper divisors (1).

30422256421 is an equidigital number, since it uses as much as digits as its factorization.

30422256421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 30422256421 its reverse (12465222403), we get a palindrome (42887478824).

The spelling of 30422256421 in words is "thirty billion, four hundred twenty-two million, two hundred fifty-six thousand, four hundred twenty-one".