30020121 has 12 divisors (see below), whose sum is σ = 44761600. Its totient is φ = 19367640.

The previous prime is 30020119. The next prime is 30020173. The reversal of 30020121 is 12102003.

It is a happy number.

It is not a de Polignac number, because 30020121 - 2¹ = 30020119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30020621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53521 + ... + 54078.

Almost surely, 2^30020121 is an apocalyptic number.

30020121 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

30020121 is a deficient number, since it is larger than the sum of its proper divisors (14741479).

30020121 is a wasteful number, since it uses less digits than its factorization.

30020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107636 (or 107633 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 30020121 is about 5479.0620547681. The cubic root of 30020121 is about 310.7927024320.

Adding to 30020121 its reverse (12102003), we get a palindrome (42122124).

The spelling of 30020121 in words is "thirty million, twenty thousand, one hundred twenty-one".