103081221 has 16 divisors (see below), whose sum is σ = 154291200. Its totient is φ = 68010624.

The previous prime is 103081211. The next prime is 103081241. The reversal of 103081221 is 122180301.

It is not a de Polignac number, because 103081221 - 2¹¹ = 103079173 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 103081194 and 103081203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103081211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17061 + ... + 22298.

It is an arithmetic number, because the mean of its divisors is an integer number (9643200).

Almost surely, 2^103081221 is an apocalyptic number.

It is an amenable number.

103081221 is a deficient number, since it is larger than the sum of its proper divisors (51209979).

103081221 is an equidigital number, since it uses as much as digits as its factorization.

103081221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39465 (or 39459 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 103081221 is about 10152.8922480247. The cubic root of 103081221 is about 468.8779951269.

The spelling of 103081221 in words is "one hundred three million, eighty-one thousand, two hundred twenty-one".