30222421 has 4 divisors (see below), whose sum is σ = 30925312. Its totient is φ = 29519532.

The previous prime is 30222397. The next prime is 30222431. The reversal of 30222421 is 12422203.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30222421 - 2⁹ = 30221909 is a prime.

It is a super-2 number, since 2×30222421² = 1826789462202482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30222395 and 30222404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30222431) 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, 351381 + ... + 351466.

It is an arithmetic number, because the mean of its divisors is an integer number (7731328).

Almost surely, 2^30222421 is an apocalyptic number.

It is an amenable number.

30222421 is a deficient number, since it is larger than the sum of its proper divisors (702891).

30222421 is an equidigital number, since it uses as much as digits as its factorization.

30222421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702890.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 30222421 is about 5497.4922464702. The cubic root of 30222421 is about 311.4892647970.

Adding to 30222421 its reverse (12422203), we get a palindrome (42644624).

The spelling of 30222421 in words is "thirty million, two hundred twenty-two thousand, four hundred twenty-one".