111345123400 has 48 divisors (see below), whose sum is σ = 295859903040. Its totient is φ = 38175470400.

The previous prime is 111345123389. The next prime is 111345123401. The reversal of 111345123400 is 4321543111.

It is a super-2 number, since 2×111345123400² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (111345123401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39764716 + ... + 39767515.

It is an arithmetic number, because the mean of its divisors is an integer number (6163747980).

Almost surely, 2^111345123400 is an apocalyptic number.

111345123400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111345123400 is an abundant number, since it is smaller than the sum of its proper divisors (184514779640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111345123400 is a wasteful number, since it uses less digits than its factorization.

111345123400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79532254 (or 79532245 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 111345123400 its reverse (4321543111), we get a palindrome (115666666511).

The spelling of 111345123400 in words is "one hundred eleven billion, three hundred forty-five million, one hundred twenty-three thousand, four hundred".