121330020 has 96 divisors (see below), whose sum is σ = 411118848. Its totient is φ = 26099712.

The previous prime is 121329977. The next prime is 121330031. The reversal of 121330020 is 20033121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 121329978 and 121330005.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1357 + ... + 15636.

It is an arithmetic number, because the mean of its divisors is an integer number (4282488).

Almost surely, 2^121330020 is an apocalyptic number.

121330020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121330020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205559424).

121330020 is an abundant number, since it is smaller than the sum of its proper divisors (289788828).

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

121330020 is a wasteful number, since it uses less digits than its factorization.

121330020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17029 (or 17027 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 121330020 is about 11014.9906945036. The cubic root of 121330020 is about 495.0580076903.

Adding to 121330020 its reverse (20033121), we get a palindrome (141363141).

The spelling of 121330020 in words is "one hundred twenty-one million, three hundred thirty thousand, twenty".