10012001120021 has 2 divisors, whose sum is σ = 10012001120022. Its totient is φ = 10012001120020.

The previous prime is 10012001120003. The next prime is 10012001120027. The reversal of 10012001120021 is 12002110021001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7999535439025 + 2012465680996 = 2828345^2 + 1418614^2 .

It is a cyclic number.

It is not a de Polignac number, because 10012001120021 - 2¹⁸ = 10012000857877 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10012001119984 and 10012001120011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10012001120027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5006000560010 + 5006000560011.

It is an arithmetic number, because the mean of its divisors is an integer number (5006000560011).

Almost surely, 2^{10012001120021} is an apocalyptic number.

It is an amenable number.

10012001120021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10012001120021 is an equidigital number, since it uses as much as digits as its factorization.

10012001120021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 10012001120021 its reverse (12002110021001), we get a palindrome (22014111141022).

The spelling of 10012001120021 in words is "ten trillion, twelve billion, one million, one hundred twenty thousand, twenty-one".