121020030 has 24 divisors (see below), whose sum is σ = 314652312. Its totient is φ = 32271984.

The previous prime is 121020019. The next prime is 121020061. The reversal of 121020030 is 30020121.

It is a happy number.

It is a super-2 number, since 2×121020030² = 29291695322401800, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 121019994 and 121020021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 672244 + ... + 672423.

It is an arithmetic number, because the mean of its divisors is an integer number (13110513).

Almost surely, 2^121020030 is an apocalyptic number.

121020030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121020030 is an abundant number, since it is smaller than the sum of its proper divisors (193632282).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121020030 is a wasteful number, since it uses less digits than its factorization.

121020030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344680 (or 1344677 counting only the distinct ones).

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

The square root of 121020030 is about 11000.9104168701. The cubic root of 121020030 is about 494.6360348663.

Adding to 121020030 its reverse (30020121), we get a palindrome (151040151).

Subtracting from 121020030 its reverse (30020121), we obtain a palindrome (90999909).

The spelling of 121020030 in words is "one hundred twenty-one million, twenty thousand, thirty".