121030030 has 16 divisors (see below), whose sum is σ = 237659184. Its totient is φ = 44010880.

The previous prime is 121030001. The next prime is 121030031. The reversal of 121030030 is 30030121.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 121029989 and 121030016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121030031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 550027 + ... + 550246.

It is an arithmetic number, because the mean of its divisors is an integer number (14853699).

Almost surely, 2^121030030 is an apocalyptic number.

121030030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121030030 is a deficient number, since it is larger than the sum of its proper divisors (116629154).

121030030 is a wasteful number, since it uses less digits than its factorization.

121030030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100291.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 121030030 is about 11001.3649153185. The cubic root of 121030030 is about 494.6496585728.

Adding to 121030030 its reverse (30030121), we get a palindrome (151060151).

Subtracting from 121030030 its reverse (30030121), we obtain a palindrome (90999909).

The spelling of 121030030 in words is "one hundred twenty-one million, thirty thousand, thirty".