111785126228 has 24 divisors (see below), whose sum is σ = 197597626464. Its totient is φ = 55328868000.

The previous prime is 111785126221. The next prime is 111785126249. The reversal of 111785126228 is 822621587111.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111785126221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2438051 + ... + 2483477.

It is an arithmetic number, because the mean of its divisors is an integer number (8233234436).

Almost surely, 2^111785126228 is an apocalyptic number.

It is an amenable number.

111785126228 is a deficient number, since it is larger than the sum of its proper divisors (85812500236).

111785126228 is a wasteful number, since it uses less digits than its factorization.

111785126228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51623 (or 51621 counting only the distinct ones).

The product of its digits is 107520, while the sum is 44.

The spelling of 111785126228 in words is "one hundred eleven billion, seven hundred eighty-five million, one hundred twenty-six thousand, two hundred twenty-eight".