111343212345 has 16 divisors (see below), whose sum is σ = 178653820032. Its totient is φ = 59214819840.

The previous prime is 111343212341. The next prime is 111343212361. The reversal of 111343212345 is 543212343111.

It is not a de Polignac number, because 111343212345 - 2² = 111343212341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111343212341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10508701 + ... + 10519290.

It is an arithmetic number, because the mean of its divisors is an integer number (11165863752).

Almost surely, 2^111343212345 is an apocalyptic number.

111343212345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111343212345 is a deficient number, since it is larger than the sum of its proper divisors (67310607687).

111343212345 is a wasteful number, since it uses less digits than its factorization.

111343212345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21028352.

The product of its digits is 8640, while the sum is 30.

Adding to 111343212345 its reverse (543212343111), we get a palindrome (654555555456).

The spelling of 111343212345 in words is "one hundred eleven billion, three hundred forty-three million, two hundred twelve thousand, three hundred forty-five".