220111202117 has 2 divisors, whose sum is σ = 220111202118. Its totient is φ = 220111202116.

The previous prime is 220111202093. The next prime is 220111202197. The reversal of 220111202117 is 711202111022.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 219474447361 + 636754756 = 468481^2 + 25234^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220111202117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220111202197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110055601058 + 110055601059.

It is an arithmetic number, because the mean of its divisors is an integer number (110055601059).

Almost surely, 2^220111202117 is an apocalyptic number.

It is an amenable number.

220111202117 is a deficient number, since it is larger than the sum of its proper divisors (1).

220111202117 is an equidigital number, since it uses as much as digits as its factorization.

220111202117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 20.

Adding to 220111202117 its reverse (711202111022), we get a palindrome (931313313139).

The spelling of 220111202117 in words is "two hundred twenty billion, one hundred eleven million, two hundred two thousand, one hundred seventeen".