121443422113421 has 8 divisors (see below), whose sum is σ = 121857326787840. Its totient is φ = 121029682449312.

The previous prime is 121443422113339. The next prime is 121443422113499. The reversal of 121443422113421 is 124311224344121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121443422113421 - 2³⁸ = 121168544206477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121443422113021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39778031 + ... + 42722108.

It is an arithmetic number, because the mean of its divisors is an integer number (15232165848480).

Almost surely, 2^{121443422113421} is an apocalyptic number.

It is an amenable number.

121443422113421 is a deficient number, since it is larger than the sum of its proper divisors (413904674419).

121443422113421 is an equidigital number, since it uses as much as digits as its factorization.

121443422113421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82505155.

The product of its digits is 36864, while the sum is 35.

Adding to 121443422113421 its reverse (124311224344121), we get a palindrome (245754646457542).

The spelling of 121443422113421 in words is "one hundred twenty-one trillion, four hundred forty-three billion, four hundred twenty-two million, one hundred thirteen thousand, four hundred twenty-one".