12211200221985 has 48 divisors (see below), whose sum is σ = 21249160732800. Its totient is φ = 6487083009792.

The previous prime is 12211200221981. The next prime is 12211200221993. The reversal of 12211200221985 is 58912200211221.

12211200221985 is a `hidden beast` number, since 1 + 221 + 1 + 200 + 221 + 9 + 8 + 5 = 666.

It is not a de Polignac number, because 12211200221985 - 2² = 12211200221981 is a prime.

It is a super-2 number, since 2×12211200221985² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12211200221981) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 103840701 + ... + 103958229.

It is an arithmetic number, because the mean of its divisors is an integer number (442690848600).

Almost surely, 2^{12211200221985} is an apocalyptic number.

12211200221985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12211200221985 is a deficient number, since it is larger than the sum of its proper divisors (9037960510815).

12211200221985 is a wasteful number, since it uses less digits than its factorization.

12211200221985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126582 (or 126579 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The spelling of 12211200221985 in words is "twelve trillion, two hundred eleven billion, two hundred million, two hundred twenty-one thousand, nine hundred eighty-five".