111467841421 has 4 divisors (see below), whose sum is σ = 111636477244. Its totient is φ = 111299205600.

The previous prime is 111467841391. The next prime is 111467841437. The reversal of 111467841421 is 124148764111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124148764111 = 37 ⋅3355372003.

It can be written as a sum of positive squares in 2 ways, for example, as 76652013321 + 34815828100 = 276861^2 + 186590^2 .

It is a cyclic number.

It is not a de Polignac number, because 111467841421 - 2⁹ = 111467840909 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 (111467841461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84316920 + ... + 84318241.

It is an arithmetic number, because the mean of its divisors is an integer number (27909119311).

Almost surely, 2^111467841421 is an apocalyptic number.

It is an amenable number.

111467841421 is a deficient number, since it is larger than the sum of its proper divisors (168635823).

111467841421 is an equidigital number, since it uses as much as digits as its factorization.

111467841421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168635822.

The product of its digits is 43008, while the sum is 40.

The spelling of 111467841421 in words is "one hundred eleven billion, four hundred sixty-seven million, eight hundred forty-one thousand, four hundred twenty-one".