121553412430 has 32 divisors (see below), whose sum is σ = 219123633600. Its totient is φ = 48548650752.

The previous prime is 121553412401. The next prime is 121553412439. The reversal of 121553412430 is 34214355121.

121553412430 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 121553412392 and 121553412401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121553412439) 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, 35098879 + ... + 35102341.

It is an arithmetic number, because the mean of its divisors is an integer number (6847613550).

Almost surely, 2^121553412430 is an apocalyptic number.

121553412430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121553412430 is a deficient number, since it is larger than the sum of its proper divisors (97570221170).

121553412430 is a wasteful number, since it uses less digits than its factorization.

121553412430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7708.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 121553412430 its reverse (34214355121), we get a palindrome (155767767551).

The spelling of 121553412430 in words is "one hundred twenty-one billion, five hundred fifty-three million, four hundred twelve thousand, four hundred thirty".