10010012021 has 2 divisors, whose sum is σ = 10010012022. Its totient is φ = 10010012020.

The previous prime is 10010011969. The next prime is 10010012093. The reversal of 10010012021 is 12021001001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9917371396 + 92640625 = 99586^2 + 9625^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10010012021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10010012521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005006010 + 5005006011.

It is an arithmetic number, because the mean of its divisors is an integer number (5005006011).

Almost surely, 2^10010012021 is an apocalyptic number.

It is an amenable number.

10010012021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10010012021 is an equidigital number, since it uses as much as digits as its factorization.

10010012021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 10010012021 its reverse (12021001001), we get a palindrome (22031013022).

The spelling of 10010012021 in words is "ten billion, ten million, twelve thousand, twenty-one".