1010006021 has 2 divisors, whose sum is σ = 1010006022. Its totient is φ = 1010006020.

The previous prime is 1010005999. The next prime is 1010006029. The reversal of 1010006021 is 1206000101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 978813796 + 31192225 = 31286^2 + 5585^2 .

It is a cyclic number.

It is not a de Polignac number, because 1010006021 - 2¹⁴ = 1009989637 is a prime.

It is a super-2 number, since 2×1010006021² = 2040224324912504882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1010005993 and 1010006011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1010006029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505003010 + 505003011.

It is an arithmetic number, because the mean of its divisors is an integer number (505003011).

Almost surely, 2^1010006021 is an apocalyptic number.

It is an amenable number.

1010006021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1010006021 is an equidigital number, since it uses as much as digits as its factorization.

1010006021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1010006021 is about 31780.5918919079. The cubic root of 1010006021 is about 1003.3242772686.

Adding to 1010006021 its reverse (1206000101), we get a palindrome (2216006122).

The spelling of 1010006021 in words is "one billion, ten million, six thousand, twenty-one".