121910030 has 32 divisors (see below), whose sum is σ = 241779168. Its totient is φ = 43888000.

The previous prime is 121910003. The next prime is 121910059. The reversal of 121910030 is 30019121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121909990 and 121910008.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5624 + ... + 16596.

It is an arithmetic number, because the mean of its divisors is an integer number (7555599).

Almost surely, 2^121910030 is an apocalyptic number.

121910030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121910030 is a deficient number, since it is larger than the sum of its proper divisors (119869138).

121910030 is a wasteful number, since it uses less digits than its factorization.

121910030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11092.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 121910030 is about 11041.2875155029. The cubic root of 121910030 is about 495.8456178174.

Adding to 121910030 its reverse (30019121), we get a palindrome (151929151).

The spelling of 121910030 in words is "one hundred twenty-one million, nine hundred ten thousand, thirty".