30133121 has 4 divisors (see below), whose sum is σ = 30276144. Its totient is φ = 29990100.

The previous prime is 30133109. The next prime is 30133123. The reversal of 30133121 is 12133103.

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: 12133103 = 89 ⋅136327.

It is a cyclic number.

It is not a de Polignac number, because 30133121 - 2⁶ = 30133057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30133096 and 30133105.

It is not an unprimeable number, because it can be changed into a prime (30133123) 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, 71195 + ... + 71616.

It is an arithmetic number, because the mean of its divisors is an integer number (7569036).

Almost surely, 2^30133121 is an apocalyptic number.

It is an amenable number.

30133121 is a deficient number, since it is larger than the sum of its proper divisors (143023).

30133121 is a wasteful number, since it uses less digits than its factorization.

30133121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143022.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 30133121 is about 5489.3643530012. The cubic root of 30133121 is about 311.1821701301.

Adding to 30133121 its reverse (12133103), we get a palindrome (42266224).

The spelling of 30133121 in words is "thirty million, one hundred thirty-three thousand, one hundred twenty-one".