103211221 has 8 divisors (see below), whose sum is σ = 104064480. Its totient is φ = 102361392.

The previous prime is 103211197. The next prime is 103211231. The reversal of 103211221 is 122112301.

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 103211221 - 2²³ = 94822613 is a prime.

It is a super-2 number, since 2×103211221² = 21305112280621682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103211231) 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 in 7 ways as a sum of consecutive naturals, for example, 116446 + ... + 117328.

It is an arithmetic number, because the mean of its divisors is an integer number (13008060).

Almost surely, 2^103211221 is an apocalyptic number.

It is an amenable number.

103211221 is a deficient number, since it is larger than the sum of its proper divisors (853259).

103211221 is an equidigital number, since it uses as much as digits as its factorization.

103211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1715.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 103211221 is about 10159.2923474029. The cubic root of 103211221 is about 469.0750194824.

Adding to 103211221 its reverse (122112301), we get a palindrome (225323522).

The spelling of 103211221 in words is "one hundred three million, two hundred eleven thousand, two hundred twenty-one".