30232121 has 2 divisors, whose sum is σ = 30232122. Its totient is φ = 30232120.

The previous prime is 30232109. The next prime is 30232141. The reversal of 30232121 is 12123203.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29822521 + 409600 = 5461^2 + 640^2 .

It is a cyclic number.

It is not a de Polignac number, because 30232121 - 2¹⁸ = 29969977 is a prime.

It is a super-2 number, since 2×30232121² = 1827962280317282, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 30232096 and 30232105.

It is not a weakly prime, because it can be changed into another prime (30232141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15116060 + 15116061.

It is an arithmetic number, because the mean of its divisors is an integer number (15116061).

Almost surely, 2^30232121 is an apocalyptic number.

It is an amenable number.

30232121 is a deficient number, since it is larger than the sum of its proper divisors (1).

30232121 is an equidigital number, since it uses as much as digits as its factorization.

30232121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 30232121 is about 5498.3743961284. The cubic root of 30232121 is about 311.5225857839.

Adding to 30232121 its reverse (12123203), we get a palindrome (42355324).

It can be divided in two parts, 302 and 32121, that added together give a palindrome (32423).

The spelling of 30232121 in words is "thirty million, two hundred thirty-two thousand, one hundred twenty-one".