121403331140443 has 12 divisors (see below), whose sum is σ = 134279096907528. Its totient is φ = 108854792501760.

The previous prime is 121403331140387. The next prime is 121403331140449. The reversal of 121403331140443 is 344041133304121.

It is not a de Polignac number, because 121403331140443 - 2²¹ = 121403329043291 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121403331140399 and 121403331140408.

It is not an unprimeable number, because it can be changed into a prime (121403331140449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1035470230 + ... + 1035587467.

It is an arithmetic number, because the mean of its divisors is an integer number (11189924742294).

Almost surely, 2^{121403331140443} is an apocalyptic number.

121403331140443 is a deficient number, since it is larger than the sum of its proper divisors (12875765767085).

121403331140443 is an equidigital number, since it uses as much as digits as its factorization.

121403331140443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2071057854 (or 2071057781 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 34.

Adding to 121403331140443 its reverse (344041133304121), we get a palindrome (465444464444564).

The spelling of 121403331140443 in words is "one hundred twenty-one trillion, four hundred three billion, three hundred thirty-one million, one hundred forty thousand, four hundred forty-three".