103221311 has 2 divisors, whose sum is σ = 103221312. Its totient is φ = 103221310.

The previous prime is 103221301. The next prime is 103221323. The reversal of 103221311 is 113122301.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 103221311 - 2¹⁸ = 102959167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103221301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51610655 + 51610656.

It is an arithmetic number, because the mean of its divisors is an integer number (51610656).

Almost surely, 2^103221311 is an apocalyptic number.

103221311 is a deficient number, since it is larger than the sum of its proper divisors (1).

103221311 is an equidigital number, since it uses as much as digits as its factorization.

103221311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 103221311 is about 10159.7889249728. The cubic root of 103221311 is about 469.0903046832.

Adding to 103221311 its reverse (113122301), we get a palindrome (216343612).

The spelling of 103221311 in words is "one hundred three million, two hundred twenty-one thousand, three hundred eleven".