121303421120 has 112 divisors (see below), whose sum is σ = 349537446720. Its totient is φ = 39143276544.

The previous prime is 121303421093. The next prime is 121303421123. The reversal of 121303421120 is 21124303121.

121303421120 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (112).

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 = 121303421092 and 121303421101.

It is not an unprimeable number, because it can be changed into a prime (121303421123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1554665 + ... + 1630824.

It is an arithmetic number, because the mean of its divisors is an integer number (3120870060).

Almost surely, 2^121303421120 is an apocalyptic number.

121303421120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121303421120 is an abundant number, since it is smaller than the sum of its proper divisors (228234025600).

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

121303421120 is a wasteful number, since it uses less digits than its factorization.

121303421120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3185530 (or 3185520 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 121303421120 its reverse (21124303121), we get a palindrome (142427724241).

The spelling of 121303421120 in words is "one hundred twenty-one billion, three hundred three million, four hundred twenty-one thousand, one hundred twenty".