220100110261 has 2 divisors, whose sum is σ = 220100110262. Its totient is φ = 220100110260.

The previous prime is 220100110189. The next prime is 220100110319. The reversal of 220100110261 is 162011001022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205667692036 + 14432418225 = 453506^2 + 120135^2 .

It is a cyclic number.

It is not a de Polignac number, because 220100110261 - 2⁷ = 220100110133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220100110361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110050055130 + 110050055131.

It is an arithmetic number, because the mean of its divisors is an integer number (110050055131).

Almost surely, 2^220100110261 is an apocalyptic number.

It is an amenable number.

220100110261 is a deficient number, since it is larger than the sum of its proper divisors (1).

220100110261 is an equidigital number, since it uses as much as digits as its factorization.

220100110261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 220100110261 its reverse (162011001022), we get a palindrome (382111111283).

The spelling of 220100110261 in words is "two hundred twenty billion, one hundred million, one hundred ten thousand, two hundred sixty-one".