110312221 has 2 divisors, whose sum is σ = 110312222. Its totient is φ = 110312220.

The previous prime is 110312197. The next prime is 110312249. The reversal of 110312221 is 122213011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109935225 + 376996 = 10485^2 + 614^2 .

It is an emirp because it is prime and its reverse (122213011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 110312221 - 2¹⁹ = 109787933 is a prime.

It is a super-2 number, since 2×110312221² = 24337572203905682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110312261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55156110 + 55156111.

It is an arithmetic number, because the mean of its divisors is an integer number (55156111).

Almost surely, 2^110312221 is an apocalyptic number.

It is an amenable number.

110312221 is a deficient number, since it is larger than the sum of its proper divisors (1).

110312221 is an equidigital number, since it uses as much as digits as its factorization.

110312221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 110312221 is about 10502.9624868415. The cubic root of 110312221 is about 479.5948853251.

Adding to 110312221 its reverse (122213011), we get a palindrome (232525232).

The spelling of 110312221 in words is "one hundred ten million, three hundred twelve thousand, two hundred twenty-one".