222200011666111 has 4 divisors (see below), whose sum is σ = 222200544020400. Its totient is φ = 222199479311824.

The previous prime is 222200011666093. The next prime is 222200011666121. The reversal of 222200011666111 is 111666110002222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222200011666111 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222200011666121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265550566 + ... + 266386003.

It is an arithmetic number, because the mean of its divisors is an integer number (55550136005100).

Almost surely, 2^{222200011666111} is an apocalyptic number.

222200011666111 is the 6666334-th centered decagonal number.

222200011666111 is a deficient number, since it is larger than the sum of its proper divisors (532354289).

222200011666111 is an equidigital number, since it uses as much as digits as its factorization.

222200011666111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532354288.

The product of its (nonzero) digits is 3456, while the sum is 31.

Adding to 222200011666111 its reverse (111666110002222), we get a palindrome (333866121668333).

The spelling of 222200011666111 in words is "two hundred twenty-two trillion, two hundred billion, eleven million, six hundred sixty-six thousand, one hundred eleven".