110013821 has 2 divisors, whose sum is σ = 110013822. Its totient is φ = 110013820.

The previous prime is 110013797. The next prime is 110013829. The reversal of 110013821 is 128310011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92256025 + 17757796 = 9605^2 + 4214^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110013821 is a prime.

It is a super-2 number, since 2×110013821² = 24206081622040082, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 110013821.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110013829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55006910 + 55006911.

It is an arithmetic number, because the mean of its divisors is an integer number (55006911).

Almost surely, 2^110013821 is an apocalyptic number.

It is an amenable number.

110013821 is a deficient number, since it is larger than the sum of its proper divisors (1).

110013821 is an equidigital number, since it uses as much as digits as its factorization.

110013821 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 17.

The square root of 110013821 is about 10488.7473513285. The cubic root of 110013821 is about 479.1620522034.

Adding to 110013821 its reverse (128310011), we get a palindrome (238323832).

The spelling of 110013821 in words is "one hundred ten million, thirteen thousand, eight hundred twenty-one".