110103221981 has 2 divisors, whose sum is σ = 110103221982. Its totient is φ = 110103221980.

The previous prime is 110103221959. The next prime is 110103222001. The reversal of 110103221981 is 189122301011.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109467677881 + 635544100 = 330859^2 + 25210^2 .

It is a cyclic number.

It is not a de Polignac number, because 110103221981 - 2²² = 110099027677 is a prime.

It is a super-2 number, since 2×110103221981² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110103223981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55051610990 + 55051610991.

It is an arithmetic number, because the mean of its divisors is an integer number (55051610991).

Almost surely, 2^110103221981 is an apocalyptic number.

It is an amenable number.

110103221981 is a deficient number, since it is larger than the sum of its proper divisors (1).

110103221981 is an equidigital number, since it uses as much as digits as its factorization.

110103221981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 29.

Adding to 110103221981 its reverse (189122301011), we get a palindrome (299225522992).

The spelling of 110103221981 in words is "one hundred ten billion, one hundred three million, two hundred twenty-one thousand, nine hundred eighty-one".