65030121 has 20 divisors (see below), whose sum is σ = 104618052. Its totient is φ = 40017888.

The previous prime is 65030111. The next prime is 65030123. The reversal of 65030121 is 12103056.

65030121 is a `hidden beast` number, since 650 + 3 + 0 + 12 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9363600 + 55666521 = 3060^2 + 7461^2 .

It is not a de Polignac number, because 65030121 - 2⁵ = 65030089 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 65030094 and 65030103.

It is not an unprimeable number, because it can be changed into a prime (65030123) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 29826 + ... + 31931.

Almost surely, 2^65030121 is an apocalyptic number.

It is an amenable number.

65030121 is a deficient number, since it is larger than the sum of its proper divisors (39587931).

65030121 is a wasteful number, since it uses less digits than its factorization.

65030121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61782 (or 61773 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 65030121 is about 8064.1255570582. The cubic root of 65030121 is about 402.1346730785.

Adding to 65030121 its reverse (12103056), we get a palindrome (77133177).

The spelling of 65030121 in words is "sixty-five million, thirty thousand, one hundred twenty-one".