112201661 has 8 divisors (see below), whose sum is σ = 131817504. Its totient is φ = 94155120.

The previous prime is 112201651. The next prime is 112201693. The reversal of 112201661 is 166102211.

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 112201661 - 2⁶ = 112201597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112201651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 392171 + ... + 392456.

It is an arithmetic number, because the mean of its divisors is an integer number (16477188).

Almost surely, 2^112201661 is an apocalyptic number.

112201661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

112201661 is a deficient number, since it is larger than the sum of its proper divisors (19615843).

112201661 is a wasteful number, since it uses less digits than its factorization.

112201661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784651.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 112201661 is about 10592.5285461027. The cubic root of 112201661 is about 482.3175839561.

Adding to 112201661 its reverse (166102211), we get a palindrome (278303872).

The spelling of 112201661 in words is "one hundred twelve million, two hundred one thousand, six hundred sixty-one".