103144221 has 12 divisors (see below), whose sum is σ = 149241820. Its totient is φ = 68644800.

The previous prime is 103144211. The next prime is 103144241. The reversal of 103144221 is 122441301.

It can be written as a sum of positive squares in 2 ways, for example, as 97239321 + 5904900 = 9861^2 + 2430^2 .

It is not a de Polignac number, because 103144221 - 2⁵ = 103144189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 103144194 and 103144203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103144211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4126 + ... + 14943.

Almost surely, 2^103144221 is an apocalyptic number.

It is an amenable number.

103144221 is a deficient number, since it is larger than the sum of its proper divisors (46097599).

103144221 is a wasteful number, since it uses less digits than its factorization.

103144221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19676 (or 19673 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 103144221 is about 10155.9943383206. The cubic root of 103144221 is about 468.9734968346.

Adding to 103144221 its reverse (122441301), we get a palindrome (225585522).

It can be divided in two parts, 10314 and 4221, that added together give a triangular number (14535 = T₁₇₀).

The spelling of 103144221 in words is "one hundred three million, one hundred forty-four thousand, two hundred twenty-one".