111043423421 has 8 divisors (see below), whose sum is σ = 130002057024. Its totient is φ = 92858611680.

The previous prime is 111043423313. The next prime is 111043423429. The reversal of 111043423421 is 124324340111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111043423421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111043423429) 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, 193455155 + ... + 193455728.

It is an arithmetic number, because the mean of its divisors is an integer number (16250257128).

Almost surely, 2^111043423421 is an apocalyptic number.

It is an amenable number.

111043423421 is a deficient number, since it is larger than the sum of its proper divisors (18958633603).

111043423421 is an equidigital number, since it uses as much as digits as its factorization.

111043423421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386910931.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 111043423421 its reverse (124324340111), we get a palindrome (235367763532).

The spelling of 111043423421 in words is "one hundred eleven billion, forty-three million, four hundred twenty-three thousand, four hundred twenty-one".