10503221 has 2 divisors, whose sum is σ = 10503222. Its totient is φ = 10503220.

The previous prime is 10503217. The next prime is 10503277. The reversal of 10503221 is 12230501.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10491121 + 12100 = 3239^2 + 110^2 .

It is a cyclic number.

It is not a de Polignac number, because 10503221 - 2² = 10503217 is a prime.

It is a super-2 number, since 2×10503221² = 220635302749682, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 10503196 and 10503205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10503211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5251610 + 5251611.

It is an arithmetic number, because the mean of its divisors is an integer number (5251611).

Almost surely, 2^10503221 is an apocalyptic number.

It is an amenable number.

10503221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10503221 is an equidigital number, since it uses as much as digits as its factorization.

10503221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 10503221 is about 3240.8673221840. The cubic root of 10503221 is about 218.9983458658.

Adding to 10503221 its reverse (12230501), we get a palindrome (22733722).

The spelling of 10503221 in words is "ten million, five hundred three thousand, two hundred twenty-one".