111381771072225 has 24 divisors (see below), whose sum is σ = 184292740884672. Its totient is φ = 59357951224000.

The previous prime is 111381771072223. The next prime is 111381771072263. The reversal of 111381771072225 is 522270177183111.

It is a happy number.

It is not a de Polignac number, because 111381771072225 - 2¹ = 111381771072223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111381771072223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 570651957 + ... + 570847106.

It is an arithmetic number, because the mean of its divisors is an integer number (7678864203528).

Almost surely, 2^{111381771072225} is an apocalyptic number.

111381771072225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111381771072225 is a deficient number, since it is larger than the sum of its proper divisors (72910969812447).

111381771072225 is a wasteful number, since it uses less digits than its factorization.

111381771072225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141500377 (or 1141500372 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 48.

The spelling of 111381771072225 in words is "one hundred eleven trillion, three hundred eighty-one billion, seven hundred seventy-one million, seventy-two thousand, two hundred twenty-five".