121404013220 has 48 divisors (see below), whose sum is σ = 294198498048. Its totient is φ = 41220109440.

The previous prime is 121404013193. The next prime is 121404013229. The reversal of 121404013220 is 22310404121.

121404013220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 121404013192 and 121404013201.

It is not an unprimeable number, because it can be changed into a prime (121404013229) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4195151 + ... + 4223990.

It is an arithmetic number, because the mean of its divisors is an integer number (6129135376).

Almost surely, 2^121404013220 is an apocalyptic number.

121404013220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121404013220 is an abundant number, since it is smaller than the sum of its proper divisors (172794484828).

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

121404013220 is a wasteful number, since it uses less digits than its factorization.

121404013220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8419260 (or 8419258 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 121404013220 its reverse (22310404121), we get a palindrome (143714417341).

The spelling of 121404013220 in words is "one hundred twenty-one billion, four hundred four million, thirteen thousand, two hundred twenty".