30026221 has 4 divisors (see below), whose sum is σ = 30535200. Its totient is φ = 29517244.

The previous prime is 30026219. The next prime is 30026231. The reversal of 30026221 is 12262003.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12262003 = 13 ⋅943231.

It is a cyclic number.

It is not a de Polignac number, because 30026221 - 2¹ = 30026219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30026195 and 30026204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30026231) 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, 254401 + ... + 254518.

It is an arithmetic number, because the mean of its divisors is an integer number (7633800).

Almost surely, 2^30026221 is an apocalyptic number.

It is an amenable number.

30026221 is a deficient number, since it is larger than the sum of its proper divisors (508979).

30026221 is an equidigital number, since it uses as much as digits as its factorization.

30026221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508978.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 30026221 is about 5479.6186911135. The cubic root of 30026221 is about 310.8137517263.

Adding to 30026221 its reverse (12262003), we get a palindrome (42288224).

The spelling of 30026221 in words is "thirty million, twenty-six thousand, two hundred twenty-one".