30212133 has 32 divisors (see below), whose sum is σ = 48771072. Its totient is φ = 16262400.

The previous prime is 30212131. The next prime is 30212153. The reversal of 30212133 is 33121203.

It is not a de Polignac number, because 30212133 - 2¹ = 30212131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30212131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33853 + ... + 34733.

It is an arithmetic number, because the mean of its divisors is an integer number (1524096).

Almost surely, 2^30212133 is an apocalyptic number.

It is an amenable number.

30212133 is a deficient number, since it is larger than the sum of its proper divisors (18558939).

30212133 is a wasteful number, since it uses less digits than its factorization.

30212133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 30212133 is about 5496.5564674622. The cubic root of 30212133 is about 311.4539161481.

Adding to 30212133 its reverse (33121203), we get a palindrome (63333336).

The spelling of 30212133 in words is "thirty million, two hundred twelve thousand, one hundred thirty-three".