121230224420 has 24 divisors (see below), whose sum is σ = 254623097400. Its totient is φ = 48484541952.

The previous prime is 121230224411. The next prime is 121230224459. The reversal of 121230224420 is 24422032121.

121230224420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 10298596324 + 110931628096 = 101482^2 + 333064^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 339125 + ... + 597884.

It is an arithmetic number, because the mean of its divisors is an integer number (10609295725).

Almost surely, 2^121230224420 is an apocalyptic number.

121230224420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121230224420 is an abundant number, since it is smaller than the sum of its proper divisors (133392872980).

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

121230224420 is a wasteful number, since it uses less digits than its factorization.

121230224420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943487 (or 943485 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 121230224420 its reverse (24422032121), we get a palindrome (145652256541).

The spelling of 121230224420 in words is "one hundred twenty-one billion, two hundred thirty million, two hundred twenty-four thousand, four hundred twenty".