220101311 has 2 divisors, whose sum is σ = 220101312. Its totient is φ = 220101310.

The previous prime is 220101293. The next prime is 220101319. The reversal of 220101311 is 113101022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220101311 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 220101292 and 220101301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220101319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110050655 + 110050656.

It is an arithmetic number, because the mean of its divisors is an integer number (110050656).

Almost surely, 2^220101311 is an apocalyptic number.

220101311 is a deficient number, since it is larger than the sum of its proper divisors (1).

220101311 is an equidigital number, since it uses as much as digits as its factorization.

220101311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 220101311 is about 14835.8117742171. The cubic root of 220101311 is about 603.7737254185.

Adding to 220101311 its reverse (113101022), we get a palindrome (333202333).

The spelling of 220101311 in words is "two hundred twenty million, one hundred one thousand, three hundred eleven".