30122291 has 8 divisors (see below), whose sum is σ = 30451680. Its totient is φ = 29795008.

The previous prime is 30122269. The next prime is 30122293. The reversal of 30122291 is 19222103.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30122291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30122293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52655 + ... + 53223.

It is an arithmetic number, because the mean of its divisors is an integer number (3806460).

Almost surely, 2^30122291 is an apocalyptic number.

30122291 is a deficient number, since it is larger than the sum of its proper divisors (329389).

30122291 is a wasteful number, since it uses less digits than its factorization.

30122291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053.

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

The square root of 30122291 is about 5488.3778113392. The cubic root of 30122291 is about 311.1448855009.

Adding to 30122291 its reverse (19222103), we get a palindrome (49344394).

The spelling of 30122291 in words is "thirty million, one hundred twenty-two thousand, two hundred ninety-one".