110203012013681 has 2 divisors, whose sum is σ = 110203012013682. Its totient is φ = 110203012013680.

The previous prime is 110203012013621. The next prime is 110203012013777. The reversal of 110203012013681 is 186310210302011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88866141949456 + 21336870064225 = 9426884^2 + 4619185^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110203012013681 is a prime.

It is a super-2 number, since 2×110203012013681² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (110203012013621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55101506006840 + 55101506006841.

It is an arithmetic number, because the mean of its divisors is an integer number (55101506006841).

Almost surely, 2^{110203012013681} is an apocalyptic number.

It is an amenable number.

110203012013681 is a deficient number, since it is larger than the sum of its proper divisors (1).

110203012013681 is an equidigital number, since it uses as much as digits as its factorization.

110203012013681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 29.

Adding to 110203012013681 its reverse (186310210302011), we get a palindrome (296513222315692).

The spelling of 110203012013681 in words is "one hundred ten trillion, two hundred three billion, twelve million, thirteen thousand, six hundred eighty-one".