1000548121 has 2 divisors, whose sum is σ = 1000548122. Its totient is φ = 1000548120.

The previous prime is 1000548103. The next prime is 1000548161. The reversal of 1000548121 is 1218450001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 843321600 + 157226521 = 29040^2 + 12539^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000548121 - 2⁵ = 1000548089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1000548092 and 1000548101.

It is not a weakly prime, because it can be changed into another prime (1000548161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500274060 + 500274061.

It is an arithmetic number, because the mean of its divisors is an integer number (500274061).

Almost surely, 2^1000548121 is an apocalyptic number.

It is an amenable number.

1000548121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000548121 is an equidigital number, since it uses as much as digits as its factorization.

1000548121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 1000548121 is about 31631.4419683959. The cubic root of 1000548121 is about 1000.1826736283.

Adding to 1000548121 its reverse (1218450001), we get a palindrome (2218998122).

The spelling of 1000548121 in words is "one billion, five hundred forty-eight thousand, one hundred twenty-one".