121234504420 has 48 divisors (see below), whose sum is σ = 257976311040. Its totient is φ = 47850027264.

The previous prime is 121234504411. The next prime is 121234504423. The reversal of 121234504420 is 24405432121.

121234504420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×121234504420³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (121234504423) by changing a digit.

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, 2594907 + ... + 2641213.

It is an arithmetic number, because the mean of its divisors is an integer number (5374506480).

Almost surely, 2^121234504420 is an apocalyptic number.

121234504420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121234504420 is an abundant number, since it is smaller than the sum of its proper divisors (136741806620).

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

121234504420 is a wasteful number, since it uses less digits than its factorization.

121234504420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48052 (or 48050 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 121234504420 its reverse (24405432121), we get a palindrome (145639936541).

The spelling of 121234504420 in words is "one hundred twenty-one billion, two hundred thirty-four million, five hundred four thousand, four hundred twenty".