220111111010201 has 2 divisors, whose sum is σ = 220111111010202. Its totient is φ = 220111111010200.

The previous prime is 220111111010083. The next prime is 220111111010233. The reversal of 220111111010201 is 102010111111022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199027622521225 + 21083488488976 = 14107715^2 + 4591676^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220111111010201 is a prime.

It is not a weakly prime, because it can be changed into another prime (220111111010801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110055555505100 + 110055555505101.

It is an arithmetic number, because the mean of its divisors is an integer number (110055555505101).

Almost surely, 2^{220111111010201} is an apocalyptic number.

It is an amenable number.

220111111010201 is a deficient number, since it is larger than the sum of its proper divisors (1).

220111111010201 is an equidigital number, since it uses as much as digits as its factorization.

220111111010201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 220111111010201 its reverse (102010111111022), we get a palindrome (322121222121223).

The spelling of 220111111010201 in words is "two hundred twenty trillion, one hundred eleven billion, one hundred eleven million, ten thousand, two hundred one".