121432311430 has 32 divisors (see below), whose sum is σ = 225926923680. Its totient is φ = 46966859520.

The previous prime is 121432311421. The next prime is 121432311439. The reversal of 121432311430 is 34113234121.

It is an interprime number because it is at equal distance from previous prime (121432311421) and next prime (121432311439).

It is a junction number, because it is equal to n+sod(n) for n = 121432311395 and 121432311404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121432311439) 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, 1651039 + ... + 1723018.

It is an arithmetic number, because the mean of its divisors is an integer number (7060216365).

Almost surely, 2^121432311430 is an apocalyptic number.

121432311430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121432311430 is a deficient number, since it is larger than the sum of its proper divisors (104494612250).

121432311430 is a wasteful number, since it uses less digits than its factorization.

121432311430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3374184.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 121432311430 its reverse (34113234121), we get a palindrome (155545545551).

The spelling of 121432311430 in words is "one hundred twenty-one billion, four hundred thirty-two million, three hundred eleven thousand, four hundred thirty".