111211022001985 has 8 divisors (see below), whose sum is σ = 140477080423680. Its totient is φ = 84286248254064.

The previous prime is 111211022001971. The next prime is 111211022002001. The reversal of 111211022001985 is 589100220112111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111211022001985 - 2¹¹ = 111211021999937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111211022001985.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 585321168337 + ... + 585321168526.

It is an arithmetic number, because the mean of its divisors is an integer number (17559635052960).

Almost surely, 2^{111211022001985} is an apocalyptic number.

It is an amenable number.

111211022001985 is a deficient number, since it is larger than the sum of its proper divisors (29266058421695).

111211022001985 is a wasteful number, since it uses less digits than its factorization.

111211022001985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170642336887.

The product of its (nonzero) digits is 2880, while the sum is 34.

The spelling of 111211022001985 in words is "one hundred eleven trillion, two hundred eleven billion, twenty-two million, one thousand, nine hundred eighty-five".