111421819432 has 64 divisors (see below), whose sum is σ = 266819495040. Its totient is φ = 42352281600.

The previous prime is 111421819417. The next prime is 111421819433. The reversal of 111421819432 is 234918124111.

It is a junction number, because it is equal to n+sod(n) for n = 111421819391 and 111421819400.

It is not an unprimeable number, because it can be changed into a prime (111421819433) 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, 2180593 + ... + 2231104.

It is an arithmetic number, because the mean of its divisors is an integer number (4169054610).

Almost surely, 2^111421819432 is an apocalyptic number.

It is an amenable number.

111421819432 is an abundant number, since it is smaller than the sum of its proper divisors (155397675608).

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

111421819432 is a wasteful number, since it uses less digits than its factorization.

111421819432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4411762 (or 4411758 counting only the distinct ones).

The product of its digits is 13824, while the sum is 37.

The spelling of 111421819432 in words is "one hundred eleven billion, four hundred twenty-one million, eight hundred nineteen thousand, four hundred thirty-two".