30222121 has 4 divisors (see below), whose sum is σ = 30380544. Its totient is φ = 30063700.

The previous prime is 30222109. The next prime is 30222131. The reversal of 30222121 is 12122203.

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: 12122203 = 29 ⋅418007.

It is a cyclic number.

It is not a de Polignac number, because 30222121 - 2¹⁵ = 30189353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30222131) 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, 78925 + ... + 79306.

It is an arithmetic number, because the mean of its divisors is an integer number (7595136).

Almost surely, 2^30222121 is an apocalyptic number.

It is an amenable number.

30222121 is a deficient number, since it is larger than the sum of its proper divisors (158423).

30222121 is a wasteful number, since it uses less digits than its factorization.

30222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158422.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 30222121 is about 5497.4649612344. The cubic root of 30222121 is about 311.4882341374.

Adding to 30222121 its reverse (12122203), we get a palindrome (42344324).

The spelling of 30222121 in words is "thirty million, two hundred twenty-two thousand, one hundred twenty-one".