30221223 has 32 divisors (see below), whose sum is σ = 44452800. Its totient is φ = 18186240.

The previous prime is 30221209. The next prime is 30221239. The reversal of 30221223 is 32212203.

It is not a de Polignac number, because 30221223 - 2⁴ = 30221207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30221273) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 202753 + ... + 202901.

It is an arithmetic number, because the mean of its divisors is an integer number (1389150).

Almost surely, 2^30221223 is an apocalyptic number.

30221223 is a deficient number, since it is larger than the sum of its proper divisors (14231577).

30221223 is a wasteful number, since it uses less digits than its factorization.

30221223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 30221223 is about 5497.3832866192. The cubic root of 30221223 is about 311.4851489888.

Adding to 30221223 its reverse (32212203), we get a palindrome (62433426).

The spelling of 30221223 in words is "thirty million, two hundred twenty-one thousand, two hundred twenty-three".