30221241421 has 6 divisors (see below), whose sum is σ = 35155321710. Its totient is φ = 25903921176.

The previous prime is 30221241383. The next prime is 30221241481. The reversal of 30221241421 is 12414212203.

It can be written as a sum of positive squares in only one way, i.e., 27935445321 + 2285796100 = 167139^2 + 47810^2 .

It is not a de Polignac number, because 30221241421 - 2²⁷ = 30087023693 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30221241392 and 30221241401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30221241481) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 308379966 + ... + 308380063.

It is an arithmetic number, because the mean of its divisors is an integer number (5859220285).

Almost surely, 2^30221241421 is an apocalyptic number.

It is an amenable number.

30221241421 is a deficient number, since it is larger than the sum of its proper divisors (4934080289).

30221241421 is an equidigital number, since it uses as much as digits as its factorization.

30221241421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616760043 (or 616760036 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 30221241421 its reverse (12414212203), we get a palindrome (42635453624).

The spelling of 30221241421 in words is "thirty billion, two hundred twenty-one million, two hundred forty-one thousand, four hundred twenty-one".