30200221 has 4 divisors (see below), whose sum is σ = 30335872. Its totient is φ = 30064572.

The previous prime is 30200201. The next prime is 30200227. The reversal of 30200221 is 12200203.

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: 12200203 = 17 ⋅717659.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30200221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30200198 and 30200207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30200227) 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, 67491 + ... + 67936.

It is an arithmetic number, because the mean of its divisors is an integer number (7583968).

Almost surely, 2^30200221 is an apocalyptic number.

It is an amenable number.

30200221 is a deficient number, since it is larger than the sum of its proper divisors (135651).

30200221 is a wasteful number, since it uses less digits than its factorization.

30200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135650.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 30200221 is about 5495.4727731106. The cubic root of 30200221 is about 311.4129775540.

Adding to 30200221 its reverse (12200203), we get a palindrome (42400424).

The spelling of 30200221 in words is "thirty million, two hundred thousand, two hundred twenty-one".