103009221 has 72 divisors (see below), whose sum is σ = 182463840. Its totient is φ = 55774656.

The previous prime is 103009219. The next prime is 103009237. The reversal of 103009221 is 122900301.

It is a happy number.

It is not a de Polignac number, because 103009221 - 2¹ = 103009219 is a prime.

It is a super-2 number, since 2×103009221² = 21221799222053682, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 103009194 and 103009203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103009201) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 962650 + ... + 962756.

It is an arithmetic number, because the mean of its divisors is an integer number (2534220).

Almost surely, 2^103009221 is an apocalyptic number.

It is an amenable number.

103009221 is a deficient number, since it is larger than the sum of its proper divisors (79454619).

103009221 is a wasteful number, since it uses less digits than its factorization.

103009221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 103009221 is about 10149.3458409890. The cubic root of 103009221 is about 468.7688026591.

Adding to 103009221 its reverse (122900301), we get a palindrome (225909522).

The spelling of 103009221 in words is "one hundred three million, nine thousand, two hundred twenty-one".