30032121 has 16 divisors (see below), whose sum is σ = 46540800. Its totient is φ = 16869648.

The previous prime is 30032113. The next prime is 30032129. The reversal of 30032121 is 12123003.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30032113) and next prime (30032129).

It is not a de Polignac number, because 30032121 - 2³ = 30032113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30032097 and 30032106.

It is not an unprimeable number, because it can be changed into a prime (30032129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10881 + ... + 13358.

It is an arithmetic number, because the mean of its divisors is an integer number (2908800).

Almost surely, 2^30032121 is an apocalyptic number.

It is an amenable number.

30032121 is a deficient number, since it is larger than the sum of its proper divisors (16508679).

30032121 is a wasteful number, since it uses less digits than its factorization.

30032121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24308.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 30032121 is about 5480.1570232978. The cubic root of 30032121 is about 310.8341081679.

Adding to 30032121 its reverse (12123003), we get a palindrome (42155124).

The spelling of 30032121 in words is "thirty million, thirty-two thousand, one hundred twenty-one".