121403412443 has 4 divisors (see below), whose sum is σ = 125589737040. Its totient is φ = 117217087848.

The previous prime is 121403412413. The next prime is 121403412467. The reversal of 121403412443 is 344214304121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344214304121 = 18191 ⋅18922231.

It is a cyclic number.

It is not a de Polignac number, because 121403412443 - 2²² = 121399218139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 4186324567 = 121403412443 / (1 + 2 + 1 + 4 + 0 + 3 + 4 + 1 + 2 + 4 + 4 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121403412413) 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 3 ways as a sum of consecutive naturals, for example, 2093162255 + ... + 2093162312.

It is an arithmetic number, because the mean of its divisors is an integer number (31397434260).

Almost surely, 2^121403412443 is an apocalyptic number.

121403412443 is a deficient number, since it is larger than the sum of its proper divisors (4186324597).

121403412443 is an equidigital number, since it uses as much as digits as its factorization.

121403412443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4186324596.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 121403412443 its reverse (344214304121), we get a palindrome (465617716564).

The spelling of 121403412443 in words is "one hundred twenty-one billion, four hundred three million, four hundred twelve thousand, four hundred forty-three".