220100011081 has 2 divisors, whose sum is σ = 220100011082. Its totient is φ = 220100011080.

The previous prime is 220100011051. The next prime is 220100011133. The reversal of 220100011081 is 180110001022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 219453834681 + 646176400 = 468459^2 + 25420^2 .

It is a cyclic number.

It is not a de Polignac number, because 220100011081 - 2⁵ = 220100011049 is a prime.

It is a super-3 number, since 3×220100011081³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (220100011051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110050005540 + 110050005541.

It is an arithmetic number, because the mean of its divisors is an integer number (110050005541).

Almost surely, 2^220100011081 is an apocalyptic number.

It is an amenable number.

220100011081 is a deficient number, since it is larger than the sum of its proper divisors (1).

220100011081 is an equidigital number, since it uses as much as digits as its factorization.

220100011081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 16.

The spelling of 220100011081 in words is "two hundred twenty billion, one hundred million, eleven thousand, eighty-one".