220001311 has 2 divisors, whose sum is σ = 220001312. Its totient is φ = 220001310.

The previous prime is 220001281. The next prime is 220001317. The reversal of 220001311 is 113100022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220001311 - 2⁷ = 220001183 is a prime.

It is a super-4 number, since 4×220001311⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220001317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110000655 + 110000656.

It is an arithmetic number, because the mean of its divisors is an integer number (110000656).

Almost surely, 2^220001311 is an apocalyptic number.

220001311 is a deficient number, since it is larger than the sum of its proper divisors (1).

220001311 is an equidigital number, since it uses as much as digits as its factorization.

220001311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 220001311 is about 14832.4411679265. The cubic root of 220001311 is about 603.6822728075.

Adding to 220001311 its reverse (113100022), we get a palindrome (333101333).

The spelling of 220001311 in words is "two hundred twenty million, one thousand, three hundred eleven".