30041221 has 4 divisors (see below), whose sum is σ = 34332832. Its totient is φ = 25749612.

The previous prime is 30041203. The next prime is 30041237. The reversal of 30041221 is 12214003.

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: 12214003 = 59 ⋅207017.

It is a de Polignac number, because none of the positive numbers 2^k-30041221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30041281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2145795 + ... + 2145808.

It is an arithmetic number, because the mean of its divisors is an integer number (8583208).

Almost surely, 2^30041221 is an apocalyptic number.

It is an amenable number.

30041221 is a deficient number, since it is larger than the sum of its proper divisors (4291611).

30041221 is an equidigital number, since it uses as much as digits as its factorization.

30041221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4291610.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 30041221 is about 5480.9872285930. The cubic root of 30041221 is about 310.8655001646.

Adding to 30041221 its reverse (12214003), we get a palindrome (42255224).

It can be divided in two parts, 3004 and 1221, that added together give a square (4225 = 65²).

The spelling of 30041221 in words is "thirty million, forty-one thousand, two hundred twenty-one".