121303020 has 96 divisors (see below), whose sum is σ = 352933056. Its totient is φ = 31104000.

The previous prime is 121303001. The next prime is 121303033. The reversal of 121303020 is 20303121.

It is a happy number.

It is a super-2 number, since 2×121303020² = 29428845322240800, which contains 22 as substring.

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 = 121302987 and 121303005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 223950 + ... + 224490.

It is an arithmetic number, because the mean of its divisors is an integer number (3676386).

Almost surely, 2^121303020 is an apocalyptic number.

121303020 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 121303020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176466528).

121303020 is an abundant number, since it is smaller than the sum of its proper divisors (231630036).

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

121303020 is a wasteful number, since it uses less digits than its factorization.

121303020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691 (or 689 counting only the distinct ones).

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

The square root of 121303020 is about 11013.7650238236. The cubic root of 121303020 is about 495.0212826274.

Adding to 121303020 its reverse (20303121), we get a palindrome (141606141).

The spelling of 121303020 in words is "one hundred twenty-one million, three hundred three thousand, twenty".