103021001 has 2 divisors, whose sum is σ = 103021002. Its totient is φ = 103021000.

The previous prime is 103020997. The next prime is 103021013. The reversal of 103021001 is 100120301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102495376 + 525625 = 10124^2 + 725^2 .

It is a cyclic number.

It is not a de Polignac number, because 103021001 - 2² = 103020997 is a prime.

It is a super-2 number, since 2×103021001² = 21226653294084002, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 103021001.

It is not a weakly prime, because it can be changed into another prime (103021201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51510500 + 51510501.

It is an arithmetic number, because the mean of its divisors is an integer number (51510501).

Almost surely, 2^103021001 is an apocalyptic number.

It is an amenable number.

103021001 is a deficient number, since it is larger than the sum of its proper divisors (1).

103021001 is an equidigital number, since it uses as much as digits as its factorization.

103021001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 103021001 is about 10149.9261573669. The cubic root of 103021001 is about 468.7866712407.

Adding to 103021001 its reverse (100120301), we get a palindrome (203141302).

The spelling of 103021001 in words is "one hundred three million, twenty-one thousand, one".