100503221 has 8 divisors (see below), whose sum is σ = 123696384. Its totient is φ = 79518960.

The previous prime is 100503199. The next prime is 100503223. The reversal of 100503221 is 122305001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100503221 - 2⁶ = 100503157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100503196 and 100503205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100503223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 552125 + ... + 552306.

It is an arithmetic number, because the mean of its divisors is an integer number (15462048).

Almost surely, 2^100503221 is an apocalyptic number.

It is an amenable number.

100503221 is a deficient number, since it is larger than the sum of its proper divisors (23193163).

100503221 is a wasteful number, since it uses less digits than its factorization.

100503221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104451.

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

The square root of 100503221 is about 10025.1294754731. The cubic root of 100503221 is about 464.9361626629.

Adding to 100503221 its reverse (122305001), we get a palindrome (222808222).

The spelling of 100503221 in words is "one hundred million, five hundred three thousand, two hundred twenty-one".