121200303020 has 48 divisors (see below), whose sum is σ = 257212956000. Its totient is φ = 47967565824.

The previous prime is 121200303017. The next prime is 121200303071. The reversal of 121200303020 is 20303002121.

It is a happy number.

It is a super-2 number, since 2×121200303020² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121200302986 and 121200303004.

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 15 ways as a sum of consecutive naturals, for example, 11147627 + ... + 11158493.

It is an arithmetic number, because the mean of its divisors is an integer number (5358603250).

Almost surely, 2^121200303020 is an apocalyptic number.

121200303020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121200303020 is an abundant number, since it is smaller than the sum of its proper divisors (136012652980).

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

121200303020 is a wasteful number, since it uses less digits than its factorization.

121200303020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16722 (or 16720 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 121200303020 its reverse (20303002121), we get a palindrome (141503305141).

The spelling of 121200303020 in words is "one hundred twenty-one billion, two hundred million, three hundred three thousand, twenty".