111343421401 has 6 divisors (see below), whose sum is σ = 115051007706. Its totient is φ = 107751697200.

The previous prime is 111343421393. The next prime is 111343421407. The reversal of 111343421401 is 104124343111.

It can be written as a sum of positive squares in only one way, i.e., 99571171401 + 11772250000 = 315549^2 + 108500^2 .

It is not a de Polignac number, because 111343421401 - 2³ = 111343421393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111343421407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57930060 + ... + 57931981.

It is an arithmetic number, because the mean of its divisors is an integer number (19175167951).

Almost surely, 2^111343421401 is an apocalyptic number.

It is an amenable number.

111343421401 is a deficient number, since it is larger than the sum of its proper divisors (3707586305).

111343421401 is an equidigital number, since it uses as much as digits as its factorization.

111343421401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115862103 (or 115862072 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 111343421401 its reverse (104124343111), we get a palindrome (215467764512).

The spelling of 111343421401 in words is "one hundred eleven billion, three hundred forty-three million, four hundred twenty-one thousand, four hundred one".