30122219 has 4 divisors (see below), whose sum is σ = 30255144. Its totient is φ = 29989296.

The previous prime is 30122161. The next prime is 30122221. The reversal of 30122219 is 91222103.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30122219 - 2¹⁶ = 30056683 is a prime.

It is a super-2 number, since 2×30122219² = 1814696154967922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30122219.

It is not an unprimeable number, because it can be changed into a prime (30122269) 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, 66122 + ... + 66575.

It is an arithmetic number, because the mean of its divisors is an integer number (7563786).

Almost surely, 2^30122219 is an apocalyptic number.

30122219 is a deficient number, since it is larger than the sum of its proper divisors (132925).

30122219 is a wasteful number, since it uses less digits than its factorization.

30122219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132924.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 30122219 is about 5488.3712520200. The cubic root of 30122219 is about 311.1446375954.

The spelling of 30122219 in words is "thirty million, one hundred twenty-two thousand, two hundred nineteen".