30522121 has 4 divisors (see below), whose sum is σ = 34882432. Its totient is φ = 26161812.

The previous prime is 30522109. The next prime is 30522133. The reversal of 30522121 is 12122503.

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: 12122503 = 223 ⋅54361.

It is an interprime number because it is at equal distance from previous prime (30522109) and next prime (30522133).

It is a cyclic number.

It is not a de Polignac number, because 30522121 - 2⁷ = 30521993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30522095 and 30522104.

It is not an unprimeable number, because it can be changed into a prime (30523121) 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 3 ways as a sum of consecutive naturals, for example, 2180145 + ... + 2180158.

It is an arithmetic number, because the mean of its divisors is an integer number (8720608).

Almost surely, 2^30522121 is an apocalyptic number.

It is an amenable number.

30522121 is a deficient number, since it is larger than the sum of its proper divisors (4360311).

30522121 is an equidigital number, since it uses as much as digits as its factorization.

30522121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4360310.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 30522121 is about 5524.6828868271. The cubic root of 30522121 is about 312.5155055773.

Adding to 30522121 its reverse (12122503), we get a palindrome (42644624).

The spelling of 30522121 in words is "thirty million, five hundred twenty-two thousand, one hundred twenty-one".