1073105221 has 8 divisors (see below), whose sum is σ = 1078892280. Its totient is φ = 1067328192.

The previous prime is 1073105219. The next prime is 1073105239. The reversal of 1073105221 is 1225013701.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 975312900 + 97792321 = 31230^2 + 9889^2 .

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 1073105221 - 2¹ = 1073105219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1073105192 and 1073105201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1073105261) 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, 312711 + ... + 316123.

It is an arithmetic number, because the mean of its divisors is an integer number (134861535).

Almost surely, 2^1073105221 is an apocalyptic number.

It is an amenable number.

1073105221 is a deficient number, since it is larger than the sum of its proper divisors (5787059).

1073105221 is a wasteful number, since it uses less digits than its factorization.

1073105221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5015.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 1073105221 is about 32758.2847688947. The cubic root of 1073105221 is about 1023.7975893492.

Adding to 1073105221 its reverse (1225013701), we get a palindrome (2298118922).

The spelling of 1073105221 in words is "one billion, seventy-three million, one hundred five thousand, two hundred twenty-one".